1
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Gaussmann S, Peschel R, Ott J, Zak KM, Sastre J, Delhommel F, Popowicz GM, Boekhoven J, Schliebs W, Erdmann R, Sattler M. Modulation of peroxisomal import by the PEX13 SH3 domain and a proximal FxxxF binding motif. Nat Commun 2024; 15:3317. [PMID: 38632234 PMCID: PMC11024197 DOI: 10.1038/s41467-024-47605-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/08/2024] [Indexed: 04/19/2024] Open
Abstract
Import of proteins into peroxisomes depends on PEX5, PEX13 and PEX14. By combining biochemical methods and structural biology, we show that the C-terminal SH3 domain of PEX13 mediates intramolecular interactions with a proximal FxxxF motif. The SH3 domain also binds WxxxF peptide motifs in the import receptor PEX5, demonstrating evolutionary conservation of such interactions from yeast to human. Strikingly, intramolecular interaction of the PEX13 FxxxF motif regulates binding of PEX5 WxxxF/Y motifs to the PEX13 SH3 domain. Crystal structures reveal how FxxxF and WxxxF/Y motifs are recognized by a non-canonical surface on the SH3 domain. The PEX13 FxxxF motif also mediates binding to PEX14. Surprisingly, the potential PxxP binding surface of the SH3 domain does not recognize PEX14 PxxP motifs, distinct from its yeast ortholog. Our data show that the dynamic network of PEX13 interactions with PEX5 and PEX14, mediated by diaromatic peptide motifs, modulates peroxisomal matrix import.
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Affiliation(s)
- Stefan Gaussmann
- Technical University of Munich, TUM School of Natural Sciences, Bavarian NMR Center and Department of Bioscience, Lichtenbergstr. 4, 85747, Garching, Germany
- Helmholtz Munich, Molecular Targets and Therapeutics Center, Institute of Structural Biology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Rebecca Peschel
- Institute of Biochemistry and Pathobiochemistry, Department of Systems Biology, Faculty of Medicine, Ruhr University Bochum, 44780, Bochum, Germany
| | - Julia Ott
- Institute of Biochemistry and Pathobiochemistry, Department of Systems Biology, Faculty of Medicine, Ruhr University Bochum, 44780, Bochum, Germany
| | - Krzysztof M Zak
- Helmholtz Munich, Molecular Targets and Therapeutics Center, Institute of Structural Biology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Judit Sastre
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Lichtenbergstr. 4, 85747, Garching, Germany
| | - Florent Delhommel
- Technical University of Munich, TUM School of Natural Sciences, Bavarian NMR Center and Department of Bioscience, Lichtenbergstr. 4, 85747, Garching, Germany
- Helmholtz Munich, Molecular Targets and Therapeutics Center, Institute of Structural Biology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Grzegorz M Popowicz
- Technical University of Munich, TUM School of Natural Sciences, Bavarian NMR Center and Department of Bioscience, Lichtenbergstr. 4, 85747, Garching, Germany
- Helmholtz Munich, Molecular Targets and Therapeutics Center, Institute of Structural Biology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Job Boekhoven
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Lichtenbergstr. 4, 85747, Garching, Germany
| | - Wolfgang Schliebs
- Institute of Biochemistry and Pathobiochemistry, Department of Systems Biology, Faculty of Medicine, Ruhr University Bochum, 44780, Bochum, Germany
| | - Ralf Erdmann
- Institute of Biochemistry and Pathobiochemistry, Department of Systems Biology, Faculty of Medicine, Ruhr University Bochum, 44780, Bochum, Germany.
| | - Michael Sattler
- Technical University of Munich, TUM School of Natural Sciences, Bavarian NMR Center and Department of Bioscience, Lichtenbergstr. 4, 85747, Garching, Germany.
- Helmholtz Munich, Molecular Targets and Therapeutics Center, Institute of Structural Biology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany.
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2
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Chen X, Soria-Carrera H, Zozulia O, Boekhoven J. Suppressing catalyst poisoning in the carbodiimide-fueled reaction cycle. Chem Sci 2023; 14:12653-12660. [PMID: 38020366 PMCID: PMC10646924 DOI: 10.1039/d3sc04281b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023] Open
Abstract
In biology, cells regulate the function of molecules using catalytic reaction cycles that convert reagents with high chemical potential (fuel) to waste molecules. Inspired by biology, synthetic analogs of such chemical reaction cycles have been devised, and a widely used catalytic reaction cycle uses carboxylates as catalysts to accelerate the hydration of carbodiimides. The cycle is versatile and easy to use, so it is widely applied to regulate motors, pumps, self-assembly, and phase separation. However, the cycle suffers from side reactions, especially the formation of N-acylurea. In catalytic reaction cycles, side reactions are disastrous as they decrease the fuel's efficiency and, more importantly, destroy the molecular machinery or assembling molecules. Therefore, this work tested how to suppress N-acylurea by screening precursor concentration, its structure, carbodiimide structure, additives, temperature, and pH. It turned out that the combination of low temperature, low pH, and 10% pyridine as a fraction of the fuel could significantly suppress the N-acylurea side product and keep the reaction cycle highly effective to regulate successful assembly. We anticipate that our work will provide guidelines for using carbodiimide-fueled reaction cycles to regulate molecular function and how to choose optimal conditions.
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Affiliation(s)
- Xiaoyao Chen
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Héctor Soria-Carrera
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Oleksii Zozulia
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Job Boekhoven
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
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3
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Heidecker AA, Stasi M, Spears A, Boekhoven J, Pöthig A. Silver and Gold Pillarplex Pseudorotaxanes from α,ω-Dicarboxylic Acids. Chempluschem 2023; 88:e202300234. [PMID: 37306394 DOI: 10.1002/cplu.202300234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/13/2023]
Abstract
A series of pseudorotaxanes with supramolecular organometallic silver(I) and gold(I) pillarplexes acting as rings and different α,ω-dicarboxylic acids as axle components are reported. The successful formation of the host-guest complexes is shown by 1 H NMR spectroscopy and respective NMR titration. Additional evaluation with ITC titration experiments yielded dissociation constants (Kd ) ranging from 10-5 to 10-7 M. Single-crystal X-Ray diffraction analysis reveals a particularly exciting pore alignment of different examples in the solid state depending on the length of the guest. The work highlights, that dicarboxylic acids can penetrate the tight tubular pillarplex pore, paving the way to future mechanically interlocked molecules and materials.
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Affiliation(s)
- Alexandra A Heidecker
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Catalysis Research Center (CRC), Ernst-Otto-Fischer-Straße 1, 85748, Garching, Germany
| | - Michele Stasi
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Supramolecular Chemistry Lichtenbergstraße 4, 85748, Garching, Germany
| | - Alexander Spears
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Catalysis Research Center (CRC), Ernst-Otto-Fischer-Straße 1, 85748, Garching, Germany
| | - Job Boekhoven
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Supramolecular Chemistry Lichtenbergstraße 4, 85748, Garching, Germany
| | - Alexander Pöthig
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Catalysis Research Center (CRC), Ernst-Otto-Fischer-Straße 1, 85748, Garching, Germany
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4
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Bergmann AM, Bauermann J, Bartolucci G, Donau C, Stasi M, Holtmannspötter AL, Jülicher F, Weber CA, Boekhoven J. Liquid spherical shells are a non-equilibrium steady state of active droplets. Nat Commun 2023; 14:6552. [PMID: 37848445 PMCID: PMC10582082 DOI: 10.1038/s41467-023-42344-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/06/2023] [Indexed: 10/19/2023] Open
Abstract
Liquid-liquid phase separation yields spherical droplets that eventually coarsen to one large, stable droplet governed by the principle of minimal free energy. In chemically fueled phase separation, the formation of phase-separating molecules is coupled to a fuel-driven, non-equilibrium reaction cycle. It thus yields dissipative structures sustained by a continuous fuel conversion. Such dissipative structures are ubiquitous in biology but are poorly understood as they are governed by non-equilibrium thermodynamics. Here, we bridge the gap between passive, close-to-equilibrium, and active, dissipative structures with chemically fueled phase separation. We observe that spherical, active droplets can undergo a morphological transition into a liquid, spherical shell. We demonstrate that the mechanism is related to gradients of short-lived droplet material. We characterize how far out of equilibrium the spherical shell state is and the chemical power necessary to sustain it. Our work suggests alternative avenues for assembling complex stable morphologies, which might already be exploited to form membraneless organelles by cells.
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Affiliation(s)
- Alexander M Bergmann
- School of Natural Sciences, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Jonathan Bauermann
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187, Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauerstrasse 108, 01307, Dresden, Germany
| | - Giacomo Bartolucci
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187, Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauerstrasse 108, 01307, Dresden, Germany
| | - Carsten Donau
- School of Natural Sciences, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Michele Stasi
- School of Natural Sciences, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Anna-Lena Holtmannspötter
- School of Natural Sciences, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187, Dresden, Germany
- Center for Systems Biology Dresden, Pfotenhauerstrasse 108, 01307, Dresden, Germany
- Cluster of Excellence Physics of Life, Technical University of Dresden, 01307, Dresden, Germany
| | - Christoph A Weber
- Faculty of Mathematics, Natural Sciences, and Materials Engineering: Institute of Physics, University of Augsburg, Universitätsstrasse 1, 86159, Augsburg, Germany.
| | - Job Boekhoven
- School of Natural Sciences, Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany.
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5
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Späth F, Maier AS, Stasi M, Bergmann AM, Halama K, Wenisch M, Rieger B, Boekhoven J. The Role of Chemically Innocent Polyanions in Active, Chemically Fueled Complex Coacervate Droplets. Angew Chem Int Ed Engl 2023; 62:e202309318. [PMID: 37549224 DOI: 10.1002/anie.202309318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/04/2023] [Accepted: 08/07/2023] [Indexed: 08/09/2023]
Abstract
Complex coacervation describes the liquid-liquid phase separation of oppositely charged polymers. Active coacervates are droplets in which one of the electrolyte's affinity is regulated by chemical reactions. These droplets are particularly interesting because they are tightly regulated by reaction kinetics. For example, they serve as a model for membraneless organelles that are also often regulated by biochemical transformations such as post-translational modifications. They are also a great protocell model or could be used to synthesize life-they spontaneously emerge in response to reagents, compete, and decay when all nutrients have been consumed. However, the role of the unreactive building blocks, e.g., the polymeric compounds, is poorly understood. Here, we show the important role of the chemically innocent, unreactive polyanion of our chemically fueled coacervation droplets. We show that the polyanion drastically influences the resulting droplets' life cycle without influencing the chemical reaction cycle-either they are very dynamic or have a delayed dissolution. Additionally, we derive a mechanistic understanding of our observations and show how additives and rational polymer design help to create the desired coacervate emulsion life cycles.
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Affiliation(s)
- Fabian Späth
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Anton S Maier
- WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Michele Stasi
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Alexander M Bergmann
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Kerstin Halama
- WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Monika Wenisch
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Bernhard Rieger
- WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
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6
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Chen X, Kriebisch BAK, Bergmann AM, Boekhoven J. Design rules for reciprocal coupling in chemically fueled assembly. Chem Sci 2023; 14:10176-10183. [PMID: 37772095 PMCID: PMC10530897 DOI: 10.1039/d3sc02062b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 08/21/2023] [Indexed: 09/30/2023] Open
Abstract
Biology regulates the function and assembly of proteins through non-equilibrium reaction cycles. Reciprocally, the assembly of proteins can influence the reaction rates of these cycles. Such reciprocal coupling between assembly and reaction cycle is a prerequisite for behavior like dynamic instabilities, treadmilling, pattern formation, and oscillations between morphologies. While assemblies regulated by chemical reaction cycles gained traction, the concept of reciprocal coupling is under-explored. In this work, we provide two molecular design strategies to tweak the degree of reciprocal coupling between the assembly and reaction cycle. The strategies involve spacing the chemically active site away from the assembly or burying it into the assembly. We envision that design strategies facilitate the creation of reciprocally coupled and, by extension, dynamic supramolecular materials in the future.
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Affiliation(s)
- Xiaoyao Chen
- Department of Chemistry, School of Natural Sciences, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Brigitte A K Kriebisch
- Department of Chemistry, School of Natural Sciences, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Alexander M Bergmann
- Department of Chemistry, School of Natural Sciences, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Job Boekhoven
- Department of Chemistry, School of Natural Sciences, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
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7
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Tebcharani L, Akter N, Fan D, Lieleg O, Gibbs JM, Boekhoven J. Hydrolyzable emulsions as a dual release platform for hydrophobic drugs and DNA. Chem Commun (Camb) 2023. [PMID: 37294173 DOI: 10.1039/d3cc00888f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Several challenges need to be overcome when applying nucleic acids as therapeutic agents. We developed a new way to control the onset of the release of cholesterol-conjugated oligonucleotides with a simple, versatile, and cheap platform. Moreover, we combine the platform into a dual-release system that can release a hydrophobic drug with zero-order kinetics, followed by a rapid release of cholesterol-conjugated DNA.
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Affiliation(s)
- Laura Tebcharani
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching 85748, Germany.
| | - Nahida Akter
- Department of Chemistry, University of Alberta, Edmonton T6G 2G2, Canada
| | - Di Fan
- Center for Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, Garching 85748, Germany
- Department of Materials Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstraße 15, Garching 85748, Germany
| | - Oliver Lieleg
- Center for Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, Garching 85748, Germany
- Department of Materials Engineering, School of Engineering and Design, Technical University of Munich, Boltzmannstraße 15, Garching 85748, Germany
| | - Julianne M Gibbs
- Department of Chemistry, University of Alberta, Edmonton T6G 2G2, Canada
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, Garching 85748, Germany.
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8
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Abstract
In biology, the function of many molecules is regulated through nonequilibrium chemical reaction cycles. The prototypical example is the phosphorylation of an amino acid in an enzyme which induces a functional change, e.g., it folds or unfolds, assembles or disassembles, or binds a substrate. Such phosphorylation does not occur spontaneously but requires a phosphorylating agent with high chemical potential (for example, adenosine triphosphate (ATP)) to be converted into a molecule with lower chemical potential (adenosine diphosphate (ADP)). When this energy is used to regulate an assembly, we speak of chemically fueled assemblies; i.e., the molecule with high potential, the fuel, is used to regulate a self-assembly process. For example, the binding of guanosine triphosphate (GTP) to tubulin induces self-assembly. The bound GTP is hydrolyzed to guanosine diphosphate (GDP) upon assembly, which induces tubulin disassembly. The result is a dynamic assembly endowed with unique characteristics, such as time-dependent behavior and the ability to self-heal. These intriguing, unique properties have inspired supramolecular chemists to create similar chemically fueled molecular assemblies from the bottom up. While examples have been designed, they remain scarce partly because chemically fueled reaction cycles are rare and often complex. Thus, we recently developed a carbodiimide-driven reaction cycle that is versatile and easy to use, quantitatively understood, and does not suffer from side reactions. In the reaction cycle, a carboxylate precursor reacts with a carbodiimide to form an activated species like an anhydride or ester. The activated state reacts with water and thereby reverts to its precursor state; i.e., the activated state is deactivated. Effectively, the precursor catalyzes carbodiimides' conversion into waste and forms a transient activated state. We designed building blocks to regulate a range of assemblies and supramolecular materials at the expense of carbodiimide fuel. The simplicity and versatility of the reaction cycles have democratized and popularized the field of chemically fueled assemblies. In this Account, we describe what we have "learned" on our way. We introduce the field exemplified by biological nonequilibrium self-assembly. We describe the design of the carbodiimide-driven reaction cycle. Using examples from our group and others, we offer design rules for the building block's structure and strategies to create the desired morphology or supramolecular materials. The discussed morphologies include fibers, colloids, crystals, and oil- and coacervate-based droplets. We then demonstrate how these assemblies form supramolecular materials with unique material properties like the ability to self-heal. Besides, we discuss the concept of reciprocal coupling in which the assembly exerts feedback on its reaction cycle and we also offer examples of such feedback mechanisms. Finally, we close the Account with a discussion and an outlook on this field. This Account aims to provide our fundamental understanding and facilitate further progress toward conceptually new supramolecular materials.
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Affiliation(s)
- Xiaoyao Chen
- Department
of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching bei München, Germany
| | - Michaela A. Würbser
- Department
of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching bei München, Germany
| | - Job Boekhoven
- Department
of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching bei München, Germany
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9
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Chen X, Stasi M, Rodon-Fores J, Großmann PF, Bergmann AM, Dai K, Tena-Solsona M, Rieger B, Boekhoven J. A Carbodiimide-Fueled Reaction Cycle That Forms Transient 5(4 H)-Oxazolones. J Am Chem Soc 2023; 145:6880-6887. [PMID: 36931284 PMCID: PMC10064336 DOI: 10.1021/jacs.3c00273] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
In life, molecular architectures, like the cytoskeletal proteins or the nucleolus, catalyze the conversion of chemical fuels to perform their functions. For example, tubulin catalyzes the hydrolysis of GTP to form a dynamic cytoskeletal network. In contrast, myosin uses the energy obtained by catalyzing the hydrolysis of ATP to exert forces. Artificial examples of such beautiful architectures are scarce partly because synthetic chemically fueled reaction cycles are relatively rare. Here, we introduce a new chemical reaction cycle driven by the hydration of a carbodiimide. Unlike other carbodiimide-fueled reaction cycles, the proposed cycle forms a transient 5(4H)-oxazolone. The reaction cycle is efficient in forming the transient product and is robust to operate under a wide range of fuel inputs, pH, and temperatures. The versatility of the precursors is vast, and we demonstrate several molecular designs that yield chemically fueled droplets, fibers, and crystals. We anticipate that the reaction cycle can offer a range of other assemblies and, due to its versatility, can also be incorporated into molecular motors and machines.
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Affiliation(s)
- Xiaoyao Chen
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Michele Stasi
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Jennifer Rodon-Fores
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Paula F Großmann
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Alexander M Bergmann
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Kun Dai
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Marta Tena-Solsona
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Bernhard Rieger
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, School of Natural Sciences, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
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10
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Kriebisch BAK, Kriebisch CME, Bergmann AM, Wanzke C, Tena‐Solsona M, Boekhoven J. Tuning the Kinetic Trapping in Chemically Fueled Self‐Assembly. ChemSystemsChem 2022. [DOI: 10.1002/syst.202200047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Brigitte A. K. Kriebisch
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Christine M. E. Kriebisch
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Alexander M. Bergmann
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Caren Wanzke
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Marta Tena‐Solsona
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Job Boekhoven
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
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11
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Kriebisch BAK, Kriebisch CME, Bergmann AM, Wanzke C, Tena‐Solsona M, Boekhoven J. Tuning the Kinetic Trapping in Chemically Fueled Self‐Assembly. ChemSystemsChem 2022. [DOI: 10.1002/syst.202200046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Brigitte A. K. Kriebisch
- School of Natural Sciences Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Christine M. E. Kriebisch
- School of Natural Sciences Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Alexander M. Bergmann
- School of Natural Sciences Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Caren Wanzke
- School of Natural Sciences Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Marta Tena‐Solsona
- School of Natural Sciences Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Job Boekhoven
- School of Natural Sciences Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
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12
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Stasi M, Monferrer A, Babl L, Wunnava S, Dirscherl CF, Braun D, Schwille P, Dietz H, Boekhoven J. Regulating DNA-Hybridization Using a Chemically Fueled Reaction Cycle. J Am Chem Soc 2022; 144:21939-21947. [PMID: 36442850 PMCID: PMC9732876 DOI: 10.1021/jacs.2c08463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular machines, such as ATPases or motor proteins, couple the catalysis of a chemical reaction, most commonly hydrolysis of nucleotide triphosphates, to their conformational change. In essence, they continuously convert a chemical fuel to drive their motion. An outstanding goal of nanotechnology remains to synthesize a nanomachine with similar functions, precision, and speed. The field of DNA nanotechnology has given rise to the engineering precision required for such a device. Simultaneously, the field of systems chemistry developed fast chemical reaction cycles that convert fuel to change the function of molecules. In this work, we thus combined a chemical reaction cycle with the precision of DNA nanotechnology to yield kinetic control over the conformational state of a DNA hairpin. Future work on such systems will result in out-of-equilibrium DNA nanodevices with precise functions.
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Affiliation(s)
- Michele Stasi
- School
of Natural Sciences, Department of Chemistry, Technical University of Munich, Garching85748, Germany
| | - Alba Monferrer
- School
of Natural Sciences, Department of Physics, Technical University of Munich, Am Coulombwall 4, Garching85748, Germany,Munich
Institute of Biomedical Engineering, Technical
University of Munich, Boltzmannstraße 11, Garching85748, Germany
| | - Leon Babl
- Max
Planck Institute of Biochemistry, Am Klopferspitz 18, Martinsried82152,Germany
| | - Sreekar Wunnava
- Center
for NanoScience (CeNS) and Systems Biophysics, Ludwig-Maximilian University Munich, Munich80799, Germany
| | | | - Dieter Braun
- Center
for NanoScience (CeNS) and Systems Biophysics, Ludwig-Maximilian University Munich, Munich80799, Germany
| | - Petra Schwille
- Max
Planck Institute of Biochemistry, Am Klopferspitz 18, Martinsried82152,Germany
| | - Hendrik Dietz
- School
of Natural Sciences, Department of Physics, Technical University of Munich, Am Coulombwall 4, Garching85748, Germany,Munich
Institute of Biomedical Engineering, Technical
University of Munich, Boltzmannstraße 11, Garching85748, Germany
| | - Job Boekhoven
- School
of Natural Sciences, Department of Chemistry, Technical University of Munich, Garching85748, Germany,
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13
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Donau C, Boekhoven J. The chemistry of chemically fueled droplets. Trends in Chemistry 2022. [DOI: 10.1016/j.trechm.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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14
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Donau C, Späth F, Stasi M, Bergmann AM, Boekhoven J. Phase Transitions in Chemically Fueled, Multiphase Complex Coacervate Droplets. Angew Chem Int Ed Engl 2022; 61:e202211905. [PMID: 36067054 PMCID: PMC9828839 DOI: 10.1002/anie.202211905] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Indexed: 01/12/2023]
Abstract
Membraneless organelles are droplets in the cytosol that are regulated by chemical reactions. Increasing studies suggest that they are internally organized. However, how these subcompartments are regulated remains elusive. Herein, we describe a complex coacervate-based model composed of two polyanions and a short peptide. With a chemical reaction cycle, we control the affinity of the peptide for the polyelectrolytes leading to distinct regimes inside the phase diagram. We study the transitions from one regime to another and identify new transitions that can only occur under kinetic control. Finally, we show that the chemical reaction cycle controls the liquidity of the droplets offering insights into how active processes inside cells play an important role in tuning the liquid state of membraneless organelles. Our work demonstrates that not only thermodynamic properties but also kinetics should be considered in the organization of multiple phases in droplets.
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Affiliation(s)
- Carsten Donau
- Department of ChemistryTechnical University of MunichLichtenbergstrasse 485748GarchingGermany
| | - Fabian Späth
- Department of ChemistryTechnical University of MunichLichtenbergstrasse 485748GarchingGermany
| | - Michele Stasi
- Department of ChemistryTechnical University of MunichLichtenbergstrasse 485748GarchingGermany
| | - Alexander M. Bergmann
- Department of ChemistryTechnical University of MunichLichtenbergstrasse 485748GarchingGermany
| | - Job Boekhoven
- Department of ChemistryTechnical University of MunichLichtenbergstrasse 485748GarchingGermany
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15
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Kriebisch BAK, Kriebisch CME, Bergmann AM, Wanzke C, Tena‐Solsona M, Boekhoven J. Tuning the Kinetic Trapping in Chemically Fueled Self‐Assembly**. ChemSystemsChem 2022. [DOI: 10.1002/syst.202200035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Brigitte A. K. Kriebisch
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Christine M. E. Kriebisch
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Alexander M. Bergmann
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Caren Wanzke
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Marta Tena‐Solsona
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
| | - Job Boekhoven
- School of Natural Science Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching bei München Germany
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16
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Rodon-Fores J, Würbser MA, Kretschmer M, Rieß B, Bergmann AM, Lieleg O, Boekhoven J. A chemically fueled supramolecular glue for self-healing gels. Chem Sci 2022; 13:11411-11421. [PMID: 36320578 PMCID: PMC9533421 DOI: 10.1039/d2sc03691f] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/01/2022] [Indexed: 11/21/2022] Open
Abstract
Chemically fueled supramolecular materials offer unique properties that include spatial and temporal control and even the ability to self-heal. Indeed, a few studies have demonstrated the ability to self-heal, however, the underlying mechanisms remain unclear. Here, we designed a peptide that forms a fibrillar network upon chemical fueling. We were surprised that the hydrogel could self-heal despite the lack of dynamics in the fiber assembly and disassembly. We explain this behavior by a mechanism that involves the chemically fueled peptide molecules that cannot self-assemble due to the lack of nucleation sites. When the fibers are perturbed, new nucleation sites form that help the assembly resulting in the healing of the damaged network. Furthermore, we generalized the behavior for other peptides. We refer to this non-assembling, chemically-fueled peptide as a molecular glue. In future work, we aim to explore whether this self-healing mechanism applies to more complex structures, narrowing the gap between biological and synthetic self-assemblies.
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Affiliation(s)
- Jennifer Rodon-Fores
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Michaela A Würbser
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Martin Kretschmer
- TUM School of Engineering and Design, Department for Materials Engineering, Technical University of Munich Boltzmannstr. 15 85748 Garching Germany
- Center for Protein Assemblies (CPA) & Munich Institute of Biomedical Engineering (MIBE), Technical University of Munich Ernst-Otto-Fischer-Str. 8 85748 Garching Germany
| | - Benedikt Rieß
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Alexander M Bergmann
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Oliver Lieleg
- TUM School of Engineering and Design, Department for Materials Engineering, Technical University of Munich Boltzmannstr. 15 85748 Garching Germany
- Center for Protein Assemblies (CPA) & Munich Institute of Biomedical Engineering (MIBE), Technical University of Munich Ernst-Otto-Fischer-Str. 8 85748 Garching Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
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17
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Donau C, Späth F, Stasi M, Bergmann AM, Boekhoven J. Phase Transitions in Chemically Fueled, Multiphase Complex Coacervate Droplets. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Carsten Donau
- Technische Universität München: Technische Universitat Munchen Chemistry GERMANY
| | - Fabian Späth
- Technische Universität München: Technische Universitat Munchen Chemistry GERMANY
| | - Michele Stasi
- Technische Universität München: Technische Universitat Munchen Chemistry GERMANY
| | | | - Job Boekhoven
- Technical University of Munchen Chemistry Lichtenbergstrasse 485748Germany 85748 Garching GERMANY
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18
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Bergmann AM, Donau C, Späth F, Jahnke K, Göpfrich K, Boekhoven J. Evolution and Single‐Droplet Analysis of Fuel‐Driven Compartments by Droplet‐Based Microfluidics. Angew Chem Int Ed Engl 2022; 61:e202203928. [PMID: 35657164 PMCID: PMC9400878 DOI: 10.1002/anie.202203928] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Alexander M. Bergmann
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Carsten Donau
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Fabian Späth
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Kevin Jahnke
- Biophysical Engineering Group Max Planck Institute for Medical Research Jahnstraße 29 69120 Heidelberg Germany
- Department of Physics and Astronomy Heidelberg University 69120 Heidelberg Germany
| | - Kerstin Göpfrich
- Biophysical Engineering Group Max Planck Institute for Medical Research Jahnstraße 29 69120 Heidelberg Germany
- Department of Physics and Astronomy Heidelberg University 69120 Heidelberg Germany
| | - Job Boekhoven
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
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19
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Bergmann AM, Donau C, Späth F, Jahnke K, Göpfrich K, Boekhoven J. Evolution and Single‐Droplet Analysis of Fuel‐Driven Compartments by Droplet‐Based Microfluidics. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Carsten Donau
- Technische Universität München: Technische Universitat Munchen Chemistry GERMANY
| | - Fabian Späth
- TU München: Technische Universitat Munchen Chemistry GERMANY
| | - Kevin Jahnke
- Max-Planck-Institute for Medical Research: Max-Planck-Institut fur medizinische Forschung Medical Research GERMANY
| | - Kerstin Göpfrich
- Max-Planck-Institute for Medical Research: Max-Planck-Institut fur medizinische Forschung Medical Research GERMANY
| | - Job Boekhoven
- Technical University of Munchen Chemistry Lichtenbergstrasse 485748Germany 85748 Garching GERMANY
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20
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Schnitter F, Rieß B, Jandl C, Boekhoven J. Memory, switches, and an OR-port through bistability in chemically fueled crystals. Nat Commun 2022; 13:2816. [PMID: 35595758 PMCID: PMC9122941 DOI: 10.1038/s41467-022-30424-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/29/2022] [Indexed: 11/12/2022] Open
Abstract
The ability to store information in chemical reaction networks is essential for the complex behavior we associate with life. In biology, cellular memory is regulated through transcriptional states that are bistable, i.e., a state that can either be on or off and can be flipped from one to another through a transient signal. Such memory circuits have been realized synthetically through the rewiring of genetic systems in vivo or through the rational design of reaction networks based on DNA and highly evolved enzymes in vitro. Completely bottom-up analogs based on small molecules are rare and hard to design and thus represent a challenge for systems chemistry. In this work, we show that bistability can be designed from a simple non-equilibrium reaction cycle that is coupled to crystallization. The crystals exert the necessary feedback on the reaction cycle required for the bistability resulting in an on-state with assemblies and an off-state without. Each state represents volatile memory that can be stored in continuously stirred tank reactors indefinitely even though molecules are turned over on a minute-timescale. We showcase the system’s abilities by creating a matrix display that can store images and by creating an OR-gate by coupling several switches together. In biology, information is stored and processed using highly evolved molecules in bistable states. Here, the authors demonstrate bistability in a synthetic system without the need for evolved biomolecules or autocatalytic networks.
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Affiliation(s)
- Fabian Schnitter
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Benedikt Rieß
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Christian Jandl
- Catalysis Research Centre, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany. .,Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748, Garching, Germany.
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21
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Schwarz PS, Tena-Solsona M, Dai K, Boekhoven J. Carbodiimide-fueled catalytic reaction cycles to regulate supramolecular processes. Chem Commun (Camb) 2022; 58:1284-1297. [PMID: 35014639 DOI: 10.1039/d1cc06428b] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Using molecular self-assembly, supramolecular chemists can create Gigadalton-structures with angstrom precision held together by non-covalent interactions. However, despite relying on the same molecular toolbox for self-assembly, these synthetic structures lack the complexity and sophistication of biological assemblies. Those assemblies are non-equilibrium structures that rely on the constant consumption of energy transduced from the hydrolysis of chemical fuels like ATP and GTP, which endows them with dynamic properties, e.g., temporal and spatial control and self-healing ability. Thus, to synthesize life-like materials, we have to find a reaction cycle that converts chemical energy to regulate self-assembly. We and others recently found that this can be done by a reaction cycle that hydrates carbodiimides. This feature article aims to provide an overview of how the energy transduced from carbodiimide hydration can alter the function of molecules and regulate molecular assemblies. The goal is to offer the reader design considerations for carbodiimide-driven reaction cycles to create a desired morphology or function of the assembly and ultimately to push chemically fueled self-assembly further towards the bottom-up synthesis of life.
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Affiliation(s)
- Patrick S Schwarz
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany.
| | - Marta Tena-Solsona
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany.
| | - Kun Dai
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany.
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany. .,Institute for Advanced Study, Technical University of Munich, Lichtenbergstraße 2a, 85748, Garching, Germany
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22
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Xue Y, Fehn N, Brandt VK, Stasi M, Boekhoven J, Heiz U, Kartouzian A. Tunable induced circular dichroism in gels. Chirality 2022; 34:550-558. [PMID: 34989021 DOI: 10.1002/chir.23409] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 11/09/2022]
Abstract
The ICD phenomenon has drawn a lot of attention in recent years in applicable fields such as chiral sensing and chiroptical devices. In this work, we first gaze at the issues of thin spin-coated films not being able to deliver consistent ICD signals. A hypothesis of the underlying problem is proposed through a brief elucidation of the spin-coating process. To confirm and eliminate the uncontrollable dynamic factors with spin coating, we then dedicate our efforts to develop a new gel system based on chiral L-/D-N',N'-Dibenzoyl-cystine. Achiral dye molecules are intercalated in a DBC gel through a "one-step" preparation procedure. Compared to the former spin-coating system, significantly improved reproducibility of the new gel system is demonstrated. Besides, the ICD signals can be customized in a broad spectral range (wavelength tunability) by substituting dye molecules. Finally, we discuss the potential applications of this interesting system.
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Affiliation(s)
- Yu Xue
- Lehrstuhl für Physikalische Chemie, Technische Universität München, Munich, Germany
| | - Natalie Fehn
- Lehrstuhl für Physikalische Chemie, Technische Universität München, Munich, Germany
| | | | - Michele Stasi
- Department of Chemistry, Technische Universität München, Munich, Germany
| | - Job Boekhoven
- Department of Chemistry, Technische Universität München, Munich, Germany
| | - Ueli Heiz
- Lehrstuhl für Physikalische Chemie, Technische Universität München, Munich, Germany
| | - Aras Kartouzian
- Lehrstuhl für Physikalische Chemie, Technische Universität München, Munich, Germany
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23
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Kretschmer M, Hayta EN, Ertelt MJ, Würbser MA, Boekhoven J, Lieleg O. A rotating bioreactor for the production of biofilms at the solid-air interface. Biotechnol Bioeng 2021; 119:895-906. [PMID: 34958130 DOI: 10.1002/bit.28023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 12/17/2021] [Accepted: 12/19/2021] [Indexed: 11/05/2022]
Abstract
Conventional bioreactors are typically developed for the production of planktonic bacteria or submerged biofilms. In contrast, reactors for the continuous production of biofilms at the solid-air interface are scarce, and they require specific conditions since the bacteria need to attach firmly to the surface and require a permanent supply of moisture and nutrients from below. Recently, research from the field of civil engineering has pinpoint an increased need for the production of terrestrial biofilms: several variants of Bacillus subtilis biofilms have been shown to be useful additives to mortar that increase the water repellency and thus the lifetime of the cementitious material. The bioreactor introduced here allows for the continuous production of such bacterial biofilms at the solid/air interface, and they have virtually identical properties as biofilms cultivated via classical microbiological techniques. This is made possible by equipping a rotating cylinder with a porous membrane that acts as a solid growth substrate the bacterial biomass can form on. In this configuration, nutrient supply is enabled via diffusive transport of a suitable growth medium from the core volume of the cylindrical reactor to the membrane surface. In addition to cultivating bacterial biofilms, the versatile and adaptable setup introduced here also enables the growth of other microbial organisms including the yeast Saccharomyces cerevisiae and the fungus Penicillium chrysogenum. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Martin Kretschmer
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748, Garching, Germany.,Center for Functional Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
| | - Elif N Hayta
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748, Garching, Germany.,Center for Functional Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
| | - Marvin J Ertelt
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748, Garching, Germany.,Center for Functional Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
| | - Michaela A Würbser
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748, Garching, Germany
| | - Oliver Lieleg
- School of Engineering and Design, Department of Materials Engineering, Technical University of Munich, Boltzmannstraße 15, 85748, Garching, Germany.,Center for Functional Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748, Garching, Germany
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24
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Niebuur BJ, Hegels H, Tena-Solsona M, Schwarz PS, Boekhoven J, Papadakis CM. Droplet Formation by Chemically Fueled Self-Assembly: The Role of Precursor Hydrophobicity. J Phys Chem B 2021; 125:13542-13551. [PMID: 34851128 DOI: 10.1021/acs.jpcb.1c08034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We investigate active droplets that form at the expense of a chemical fuel in aqueous buffer and vanish autonomously. Dynamic light scattering reveals the scattered intensity, the hydrodynamic radius, and the width of the size distribution with high precision as well as high temporal and spatial resolutions. Comparing the resulting time-dependent behavior of the droplet characteristics with the time-dependent concentration of the anhydrides, the roles of the chemical reaction cycle and of colloidal growth processes are elucidated. The droplet sizes and lifetimes depend strongly on the hydrophobicity of the precursor, and the growth rate is found to correlate with the deactivation rate of the product.
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Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Hendrik Hegels
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Marta Tena-Solsona
- Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany.,Institute for Advanced Studies, Technische Universität München, Lichtenbergstraße 2a, 85748 Garching, Germany
| | - Patrick S Schwarz
- Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Job Boekhoven
- Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany.,Institute for Advanced Studies, Technische Universität München, Lichtenbergstraße 2a, 85748 Garching, Germany
| | - Christine M Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
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25
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Dai K, Tena-Solsona M, Rodon Fores J, Bergmann AM, Boekhoven J. Morphological transitions in chemically fueled self-assembly. Nanoscale 2021; 13:19864-19869. [PMID: 34825692 DOI: 10.1039/d1nr04954b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In chemically fueled self-assembly, a reaction cycle activates and deactivates molecules for self-assembly. The resulting assembly is dynamic and should be endowed with unique behavior in this kinetically controlled regime. Recent works have mainly focused on design rules for the activation of molecules for self-assembly, thereby assuming that disassembly upon deactivation inherently follows. However, that is not always the case. This work shows a family of peptides that assemble into colloids regulated through a chemical reaction cycle. Despite their similarity in assembly, we find that they follow a different disassembly pathway upon deactivation. The colloids from several peptides completely disassemble as fuel depletes while others transition into fibers. Our findings demonstrate that assembly and disassembly should be taken into account in chemically fueled self-assembly.
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Affiliation(s)
- Kun Dai
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.
| | - Marta Tena-Solsona
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.
| | - Jennifer Rodon Fores
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.
| | - Alexander M Bergmann
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.
- Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748 Garching, Germany
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26
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Tebcharani L, Wanzke C, Lutz TM, Rodon-Fores J, Lieleg O, Boekhoven J. Emulsions of hydrolyzable oils for the zero-order release of hydrophobic drugs. J Control Release 2021; 339:498-505. [PMID: 34662584 DOI: 10.1016/j.jconrel.2021.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/29/2021] [Accepted: 10/12/2021] [Indexed: 11/18/2022]
Abstract
Drug delivery systems that release hydrophobic drugs with zero-order kinetics remain rare and are often complicated to use. In this work, we present a gellified emulsion (emulgel) that comprises oil droplets of a hydrolyzable oil entrapped in a hydrogel. In the oil, we incorporate various hydrophobic drugs and, because the oil hydrolyzes with zero-order kinetics, the release of the drugs is also linear. We tune the release period from three hours to 50 h by varying the initial oil concentration. We show that the release rate is tunable by varying the initial drug concentration. Our quantitative understanding of the system allows for predicting the drug release kinetics once the drug's partition coefficient between the oil and the aqueous phase is known. Finally, we show that our drug delivery system is fully functional after storing it at -20 °C. Cell viability studies show that the hydrolyzable oil and its hydrolysis product are non-toxic under the employed conditions. With its simplicity and versatility, our system is a promising platform for the zero-order release of the drug.
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Affiliation(s)
- Laura Tebcharani
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Caren Wanzke
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Theresa M Lutz
- Center for Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748 Garching, Germany
| | - Jennifer Rodon-Fores
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Oliver Lieleg
- Center for Protein Assemblies (CPA), Technical University of Munich, Ernst-Otto-Fischer Straße 8, 85748 Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.
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27
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Ha M, Nader S, Pawsey S, Struppe J, Monette M, Mansy SS, Boekhoven J, Michaelis VK. Racing toward Fast and Effective 17O Isotopic Labeling and Nuclear Magnetic Resonance Spectroscopy of N-Formyl-MLF-OH and Associated Building Blocks. J Phys Chem B 2021; 125:11916-11926. [PMID: 34694819 DOI: 10.1021/acs.jpcb.1c07397] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Solid-state 1H, 13C, and 15N nuclear magnetic resonance (NMR) spectroscopy has been an essential analytical method in studying complex molecules and biomolecules for decades. While oxygen-17 (17O) NMR is an ideal and robust candidate to study hydrogen bonding within secondary and tertiary protein structures for example, it continues to elude many. We discuss an improved multiple-turnover labeling procedure to develop a fast and cost-effective method to 17O label fluoroenylmethyloxycarbonyl (Fmoc)-protected amino acid building blocks. This approach allows for inexpensive ($0.25 USD/mg) insertion of 17O labels, an important barrier to overcome for future biomolecular studies. The 17O NMR results of these building blocks and a site-specific strategy for labeled N-acetyl-MLF-OH and N-formyl-MLF-OH tripeptides are presented. We showcase growth in NMR development for maximizing sensitivity gains using emerging sensitivity enhancement techniques including population transfer, high-field dynamic nuclear polarization, and cross-polarization magic-angle spinning cryoprobes.
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Affiliation(s)
- Michelle Ha
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Serge Nader
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Shane Pawsey
- Bruker Biospin Corporation, 15 Fortune Drive, Billerica, Massachusetts 01821, United States
| | - Jochem Struppe
- Bruker Biospin Corporation, 15 Fortune Drive, Billerica, Massachusetts 01821, United States
| | - Martine Monette
- Bruker BioSpin Ltd., Bruker Corporation, 555 Steeles Avenue E, Milton, Ontario L9T 1Y6, Canada
| | - Sheref S Mansy
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85748, Germany.,Institute for Advanced Study, Technical University of Munich, Lichtenbergstraße 2a, Garching 85748, Germany
| | - Vladimir K Michaelis
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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28
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Schwarz PS, Tebcharani L, Heger JE, Müller-Buschbaum P, Boekhoven J. Chemically fueled materials with a self-immolative mechanism: transient materials with a fast on/off response. Chem Sci 2021; 12:9969-9976. [PMID: 34349967 PMCID: PMC8317627 DOI: 10.1039/d1sc02561a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 06/19/2021] [Indexed: 12/23/2022] Open
Abstract
There is an increasing demand for transient materials with a predefined lifetime like self-erasing temporary electronic circuits or transient biomedical implants. Chemically fueled materials are an example of such materials; they emerge in response to chemical fuel, and autonomously decay as they deplete it. However, these materials suffer from a slow, typically first order decay profile. That means that over the course of the material's lifetime, its properties continuously change until it is fully decayed. Materials that have a sharp on-off response are self-immolative ones. These degrade rapidly after an external trigger through a self-amplifying decay mechanism. However, self-immolative materials are not autonomous; they require a trigger. We introduce here materials with the best of both, i.e., materials based on chemically fueled emulsions that are also self-immolative. The material has a lifetime that can be predefined, after which it autonomously and rapidly degrades. We showcase the new material class with self-expiring labels and drug-delivery platforms with a controllable burst-release.
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Affiliation(s)
- Patrick S Schwarz
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Laura Tebcharani
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Julian E Heger
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München James-Franck-Str. 1 85748 Garching Germany
| | - Peter Müller-Buschbaum
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München James-Franck-Str. 1 85748 Garching Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München Lichtenbergstr. 1 85748 Garching Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
- Institute for Advanced Study, Technical University of Munich Lichtenbergstraße 2a 85748 Garching Germany
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29
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Abstract
In dynamic combinatorial libraries, molecules react with each other reversibly to form intricate networks under thermodynamic control. In biological systems, chemical reaction networks operate under kinetic control by the transduction of chemical energy. We thus introduced the notion of energy transduction, via chemical reaction cycles, to a dynamic combinatorial library. In the library, monomers can be oligomerized, oligomers can be deoligomerized, and oligomers can recombine. Interestingly, we found that the dynamics of the library's components were dominated by transacylation, which is an equilibrium reaction. In contrast, the library's dynamics were dictated by fuel-driven activation, which is a nonequilibrium reaction. Finally, we found that self-assembly can play a large role in affecting the reaction's kinetics via feedback mechanisms. The interplay of the simultaneously operating reactions and feedback mechanisms can result in hysteresis effects in which the outcome of the competition for fuel depends on events that occurred in the past. In future work, we envision diversifying the library by modifying building blocks with catalytically active motifs and information-containing monomers.
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Affiliation(s)
- Christine M E Kriebisch
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Alexander M Bergmann
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.,Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748 Garching, Germany
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30
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Schwarz PS, Laha S, Janssen J, Huss T, Boekhoven J, Weber CA. Parasitic behavior in competing chemically fueled reaction cycles. Chem Sci 2021; 12:7554-7560. [PMID: 34163846 PMCID: PMC8171353 DOI: 10.1039/d1sc01106e] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 04/28/2021] [Indexed: 12/17/2022] Open
Abstract
Non-equilibrium, fuel-driven reaction cycles serve as model systems of the intricate reaction networks of life. Rich and dynamic behavior is observed when reaction cycles regulate assembly processes, such as phase separation. However, it remains unclear how the interplay between multiple reaction cycles affects the success of emergent assemblies. To tackle this question, we created a library of molecules that compete for a common fuel that transiently activates products. Often, the competition for fuel implies that a competitor decreases the lifetime of these products. However, in cases where the transient competitor product can phase-separate, such a competitor can increase the survival time of one product. Moreover, in the presence of oscillatory fueling, the same mechanism reduces variations in the product concentration while the concentration variations of the competitor product are enhanced. Like a parasite, the product benefits from the protection of the host against deactivation and increases its robustness against fuel variations at the expense of the robustness of the host. Such a parasitic behavior in multiple fuel-driven reaction cycles represents a lifelike trait, paving the way for the bottom-up design of synthetic life.
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Affiliation(s)
- Patrick S Schwarz
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Sudarshana Laha
- Biological Physics, Max Planck Institute for the Physics of Complex Systems Nöthnitzer Straße 38 01187 Dresden Germany
- Center for Systems Biology Dresden Pfotenhauerstraße 108 01307 Dresden Germany
| | - Jacqueline Janssen
- Biological Physics, Max Planck Institute for the Physics of Complex Systems Nöthnitzer Straße 38 01187 Dresden Germany
- Center for Systems Biology Dresden Pfotenhauerstraße 108 01307 Dresden Germany
| | - Tabea Huss
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich Lichtenbergstraße 4 85748 Garching Germany
- Institute for Advanced Study, Technical University of Munich Lichtenbergstraße 2a 85748 Garching Germany
| | - Christoph A Weber
- Biological Physics, Max Planck Institute for the Physics of Complex Systems Nöthnitzer Straße 38 01187 Dresden Germany
- Center for Systems Biology Dresden Pfotenhauerstraße 108 01307 Dresden Germany
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31
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Würbser MA, Schwarz PS, Heckel J, Bergmann AM, Walther A, Boekhoven J. Chemically Fueled Block Copolymer Self‐Assembly into Transient Nanoreactors**. ChemSystemsChem 2021. [DOI: 10.1002/syst.202100015] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Michaela A. Würbser
- Department of Chemistry Technical University Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Patrick S. Schwarz
- Department of Chemistry Technical University Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Jonas Heckel
- Institute for Macromolecular Chemistry University of Freiburg Stefan-Meier-Str. 31 79104 Freiburg Germany
- Freiburg Materials Research Center (FMF) University of Freiburg Stefan-Meier-Str. 21 79104 Freiburg Germany
- Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) University of Freiburg Georges-Köhler-Allee 105 79110 Freiburg Germany
| | - Alexander M. Bergmann
- Department of Chemistry Technical University Munich Lichtenbergstraße 4 85748 Garching Germany
| | - Andreas Walther
- A3BMS Lab Department of Chemistry University of Mainz Duesbergweg 10–14 55128 Mainz Germany
- Cluster of Excellence livMatS @ FIT – Freiburg Center for Interactive Materials and Bioinspired Technologies University of Freiburg Duesbergweg 10–14 55128 Mainz Germany
| | - Job Boekhoven
- Department of Chemistry Technical University Munich Lichtenbergstraße 4 85748 Garching Germany
- Institute for Advanced Studies Technical University Munich Lichtenbergstraße 2a 85748 Garching Germany
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32
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Späth F, Donau C, Bergmann AM, Kränzlein M, Synatschke CV, Rieger B, Boekhoven J. Molecular Design of Chemically Fueled Peptide-Polyelectrolyte Coacervate-Based Assemblies. J Am Chem Soc 2021; 143:4782-4789. [PMID: 33750125 DOI: 10.1021/jacs.1c01148] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Complex coacervated-based assemblies form when two oppositely charged polyelectrolytes combine to phase separate into a supramolecular architecture. These architectures range from complex coacervate droplets, spherical and worm-like micelles, to vesicles. These assemblies are widely applied, for example, in the food industry, and as underwater or medical adhesives, but they can also serve as a great model for biological assemblies. Indeed, biology relies on complex coacervation to form so-called membraneless organelles, dynamic and transient droplets formed by the coacervation of nucleic acids and proteins. To regulate their function, membraneless organelles are dynamically maintained by chemical reaction cycles, including phosphorylation and dephosphorylation, but exact mechanisms remain elusive. Recently, some model systems also regulated by chemical reaction cycles have been introduced, but how to design such systems and how molecular design affects their properties is unclear. In this work, we test a series of cationic peptides for their chemically fueled coacervation, and we test how their design can affect the dynamics of assembly and disassembly of the emerging structures. We combine them with both homo- and block copolymers and study the morphologies of the assemblies, including morphological transitions that are driven by the chemical reaction cycle. We deduce heuristic design rules that can be applied to other chemically regulated systems. These rules will help develop membraneless organelle model systems and lead to exciting new applications of complex coacervate-based examples like temporary adhesives.
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Affiliation(s)
- Fabian Späth
- Department of Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Carsten Donau
- Department of Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Alexander M Bergmann
- Department of Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Moritz Kränzlein
- WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University of Munich, 85748 Garching, Germany
| | | | - Bernhard Rieger
- WACKER-Chair of Macromolecular Chemistry, Catalysis Research Center, Technical University of Munich, 85748 Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, 85748 Garching, Germany.,Institute for Advanced Study, Technical University of Munich, 85748 Garching, Germany
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33
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Kriebisch BAK, Jussupow A, Bergmann AM, Kohler F, Dietz H, Kaila VRI, Boekhoven J. Reciprocal Coupling in Chemically Fueled Assembly: A Reaction Cycle Regulates Self-Assembly and Vice Versa. J Am Chem Soc 2020; 142:20837-20844. [PMID: 33237773 DOI: 10.1021/jacs.0c10486] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In biology, self-assembly of proteins and energy-consuming reaction cycles are intricately coupled. For example, tubulin is activated and deactivated for assembly by a guanosine triphosphate (GTP)-driven reaction cycle, and the emerging microtubules catalyze this reaction cycle by changing the microenvironment of the activated tubulin. Recently, synthetic analogs of chemically fueled assemblies have emerged, but examples in which assembly and reaction cycles are reciprocally coupled remain rare. In this work, we report a peptide that can be activated and deactivated for self-assembly. The emerging assemblies change the microenvironment of their building blocks, which consequently accelerate the rates of building block deactivation and reactivation. We quantitatively understand the mechanisms at play, and we are thus able to tune the catalysis by molecular design of the peptide precursor.
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Affiliation(s)
- Brigitte A K Kriebisch
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Alexander Jussupow
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Alexander M Bergmann
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Fabian Kohler
- Department of Physics, Technical University of Munich, Am Coulombwall 4a, 85748 Garching, Germany
| | - Hendrik Dietz
- Department of Physics, Technical University of Munich, Am Coulombwall 4a, 85748 Garching, Germany
| | - Ville R I Kaila
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.,Department of Biochemistry and Biophysics, Stockholm University, 10691 Stockholm, Sweden
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.,Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748 Garching, Germany
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34
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Tena‐Solsona M, Janssen J, Wanzke C, Schnitter F, Park H, Rieß B, Gibbs JM, Weber CA, Boekhoven J. Accelerated Ripening in Chemically Fueled Emulsions**. ChemSystemsChem 2020. [DOI: 10.1002/syst.202000034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Marta Tena‐Solsona
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
- Institute for Advanced Study Technical University of Munich Lichtenbergstrasse 2a 85748 Garching Germany
| | - Jacqueline Janssen
- Max Planck Institute for the Physics of Complex Systems Nöthnitzer Strasse 38 01187 Dresden Germany
- Center for Systems Biology Dresden Pfotenhauerstrasse 108 01307 Dresden Germany
| | - Caren Wanzke
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Fabian Schnitter
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Hansol Park
- Department of Chemistry University of Alberta 11227 Saskatchewan Drive T6G 2G2 Edmonton Canada
| | - Benedikt Rieß
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Julianne M. Gibbs
- Department of Chemistry University of Alberta 11227 Saskatchewan Drive T6G 2G2 Edmonton Canada
| | - Christoph A. Weber
- Max Planck Institute for the Physics of Complex Systems Nöthnitzer Strasse 38 01187 Dresden Germany
- Center for Systems Biology Dresden Pfotenhauerstrasse 108 01307 Dresden Germany
| | - Job Boekhoven
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
- Institute for Advanced Study Technical University of Munich Lichtenbergstrasse 2a 85748 Garching Germany
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35
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Donau C, Späth F, Sosson M, Kriebisch BAK, Schnitter F, Tena-Solsona M, Kang HS, Salibi E, Sattler M, Mutschler H, Boekhoven J. Active coacervate droplets as a model for membraneless organelles and protocells. Nat Commun 2020; 11:5167. [PMID: 33056997 PMCID: PMC7560875 DOI: 10.1038/s41467-020-18815-9] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 09/09/2020] [Indexed: 12/31/2022] Open
Abstract
Membraneless organelles like stress granules are active liquid-liquid phase-separated droplets that are involved in many intracellular processes. Their active and dynamic behavior is often regulated by ATP-dependent reactions. However, how exactly membraneless organelles control their dynamic composition remains poorly understood. Herein, we present a model for membraneless organelles based on RNA-containing active coacervate droplets regulated by a fuel-driven reaction cycle. These droplets emerge when fuel is present, but decay without. Moreover, we find these droplets can transiently up-concentrate functional RNA which remains in its active folded state inside the droplets. Finally, we show that in their pathway towards decay, these droplets break apart in multiple droplet fragments. Emergence, decay, rapid exchange of building blocks, and functionality are all hallmarks of membrane-less organelles, and we believe that our work could be powerful as a model to study such organelles. Membraneless organelles are liquid-liquid phase-separated droplets whose behaviour can be regulated by chemical reactions, but this process is poorly understood. Here, the authors report model membraneless organelles based on coacervate droplets that show fuel-driven dynamic behaviour and concentrate functional RNA.
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Affiliation(s)
- Carsten Donau
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Fabian Späth
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Marilyne Sosson
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Brigitte A K Kriebisch
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Fabian Schnitter
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Marta Tena-Solsona
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748, Garching, Germany
| | - Hyun-Seo Kang
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute of Structural Biology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Elia Salibi
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152, Martinsried, Germany
| | - Michael Sattler
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute of Structural Biology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Hannes Mutschler
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152, Martinsried, Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748, Garching, Germany. .,Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748, Garching, Germany.
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36
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Affiliation(s)
- Fabian Schnitter
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Job Boekhoven
- Department of Chemistry Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
- Institute for Advanced Study Technical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
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37
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Dai K, Fores JR, Wanzke C, Winkeljann B, Bergmann AM, Lieleg O, Boekhoven J. Regulating Chemically Fueled Peptide Assemblies by Molecular Design. J Am Chem Soc 2020; 142:14142-14149. [DOI: 10.1021/jacs.0c04203] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Kun Dai
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Jennifer Rodon Fores
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Caren Wanzke
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Benjamin Winkeljann
- Department of Mechanical Engineering and Munich School of Bioengineering, Technical University of Munich, Boltzmannstrasse 11, 85748 Garching, Germany
| | - Alexander M. Bergmann
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Oliver Lieleg
- Department of Mechanical Engineering and Munich School of Bioengineering, Technical University of Munich, Boltzmannstrasse 11, 85748 Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany
- Institute for Advanced Study, Technical University of Munich, Lichtenbergstrasse 2a, 85748 Garching, Germany
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38
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Affiliation(s)
- Caren Wanzke
- Department of ChemistryTechnical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Alexander Jussupow
- Department of ChemistryTechnical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Fabian Kohler
- Physik DepartmentTechnical University of Munich Am Coulombwall 4a 85748 Garching Germany
| | - Hendrik Dietz
- Physik DepartmentTechnical University of Munich Am Coulombwall 4a 85748 Garching Germany
- Institute for Advanced StudyTechnical University of Munich Lichtenbergstrasse 2a 85748 Garching Germany
| | - Ville R. I. Kaila
- Department of ChemistryTechnical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
| | - Job Boekhoven
- Department of ChemistryTechnical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
- Institute for Advanced StudyTechnical University of Munich Lichtenbergstrasse 2a 85748 Garching Germany
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39
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Boekhoven J. Systems Chemistry: Out of Equilibrium. ChemSystemsChem 2019. [DOI: 10.1002/syst.201800003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Job Boekhoven
- Department of ChemistryTechnical University of Munich 85748 Garching Germany
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40
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Grötsch RK, Wanzke C, Speckbacher M, Angı A, Rieger B, Boekhoven J. Pathway Dependence in the Fuel-Driven Dissipative Self-Assembly of Nanoparticles. J Am Chem Soc 2019; 141:9872-9878. [PMID: 31194525 DOI: 10.1021/jacs.9b02004] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We describe the self-assembly of gold and iron oxide nanoparticles regulated by a chemical reaction cycle that hydrolyzes a carbodiimide-based fuel. In a reaction with the chemical fuel, the nanoparticles are chemically activated to a state that favors assembling into clusters. The activated state is metastable and decays to the original precursor reversing the assembly. The dynamic interplay of activation and deactivation results in a material of which the behavior is regulated by the amount of fuel added to the system; they either did not assemble, assembled transiently, or assembled permanently in kinetically trapped clusters. Because of the irreversibility of the kinetically trapped clusters, we found that the behavior of the self-assembly was prone to hysteresis effects. The final state of the system in the energy landscape depended on the pathway of preparation. For example, when a large amount of fuel was added at once, the material would end up kinetically trapped in a local minimum. When the same amount of fuel was added in small batches with sufficient time for the system to re-equilibrate, the final state would be the global minimum. A better understanding of pathway complexity in the energy landscape is crucial for the development of fuel-driven supramolecular materials.
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Affiliation(s)
| | | | - Maximilian Speckbacher
- Molecular Electronics, Department of Electrical and Computer Engineering , Technical University of Munich , Thersienstraße 90 , 80333 Munich , Germany
| | - Arzu Angı
- Wacker-Chair of Macromolecular Chemistry , Catalysis Research Center , Ernst-Otto-Fischer-Straße 1 , 85747 Garching , Germany
| | - Bernhard Rieger
- Wacker-Chair of Macromolecular Chemistry , Catalysis Research Center , Ernst-Otto-Fischer-Straße 1 , 85747 Garching , Germany
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Edeleva E, Salditt A, Stamp J, Schwintek P, Boekhoven J, Braun D. Continuous nonenzymatic cross-replication of DNA strands with in situ activated DNA oligonucleotides. Chem Sci 2019; 10:5807-5814. [PMID: 31293769 PMCID: PMC6568275 DOI: 10.1039/c9sc00770a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 04/28/2019] [Indexed: 12/28/2022] Open
Abstract
A nonenzymatic DNA cross-replicator uses temperature cycling to overcome product inhibition and thus survives exponential dilution conditions.
Continuous enzyme-free replication of oligonucleotides is central for open-ended evolution experiments that mimic the origin of life. Here, we studied a reaction system, whereby two 24mer DNA templates cross-catalyzed each other's synthesis from four 12mer DNA fragments, two of which were in situ activated with the condensing agent 1-ethyl-3-(3-dimethylamino-propyl)carbodiimide (EDC). We circumvented the problem of product inhibition by melting the stable product duplexes for their reuse as templates in the following ligation step. The system reproduced itself through ligation/melting cycles and survived exponential dilution. We quantified EDC-induced side reactions in a detailed kinetic model. The model allowed us to analyze the effects of various reaction rates on the system's kinetics and confirmed maximal replication under the chosen conditions. The presented system enables us to study nonenzymatic open-ended evolution experiments starting from diverse sequence pools.
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Affiliation(s)
- Evgeniia Edeleva
- Systems Biophysics , Physics Department , Ludwig-Maximilians-Universität München , Amalienstraße 54 , 80799 München , Germany .
| | - Annalena Salditt
- Systems Biophysics , Physics Department , Ludwig-Maximilians-Universität München , Amalienstraße 54 , 80799 München , Germany .
| | - Julian Stamp
- Systems Biophysics , Physics Department , Ludwig-Maximilians-Universität München , Amalienstraße 54 , 80799 München , Germany .
| | - Philipp Schwintek
- Systems Biophysics , Physics Department , Ludwig-Maximilians-Universität München , Amalienstraße 54 , 80799 München , Germany .
| | - Job Boekhoven
- Chemistry Department and Institute for Advanced Study , Technical University of Munich , Lichtenbergstraße 4 , 80895 Garching , Germany
| | - Dieter Braun
- Systems Biophysics , Physics Department , Ludwig-Maximilians-Universität München , Amalienstraße 54 , 80799 München , Germany .
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Affiliation(s)
- Marta Tena‐Solsona
- Department of ChemistryTechnical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
- Institute for Advanced StudyTechnical University of Munich Lichtenbergstrasse 2a 85748 Garching Germany
| | - Job Boekhoven
- Department of ChemistryTechnical University of Munich Lichtenbergstrasse 4 85748 Garching Germany
- Institute for Advanced StudyTechnical University of Munich Lichtenbergstrasse 2a 85748 Garching Germany
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Boekhoven J. Complexity from small molecules. Nat Nanotechnol 2018; 13:979-980. [PMID: 30323360 DOI: 10.1038/s41565-018-0283-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Job Boekhoven
- Department of Chemistry and Institute for Advanced Study, Technical University of Munich, Garching, Germany.
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Grötsch RK, Angı A, Mideksa YG, Wanzke C, Tena-Solsona M, Feige MJ, Rieger B, Boekhoven J. Dissipative Selbstassemblierung photolumineszierender Siliciumnanokristalle. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807937] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Raphael K. Grötsch
- Fakultät für Chemie; Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
- Institute for Advanced Study; Technische Universität München; Lichtenbergstraße 2a 85748 Garching Deutschland
| | - Arzu Angı
- WACKER-Lehrstuhl für Makromolekulare Chemie; Technische Universität München; Deutschland
- Zentralinstitut für Katalyseforschung; Garching Deutschland
| | - Yonatan G. Mideksa
- Center for Integrated Protein Science an der Fakultät für Chemie; Technische Universität München; Garching Deutschland
- Institute for Advanced Study; Technische Universität München; Lichtenbergstraße 2a 85748 Garching Deutschland
| | - Caren Wanzke
- Fakultät für Chemie; Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
- Institute for Advanced Study; Technische Universität München; Lichtenbergstraße 2a 85748 Garching Deutschland
| | - Marta Tena-Solsona
- Fakultät für Chemie; Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
- Institute for Advanced Study; Technische Universität München; Lichtenbergstraße 2a 85748 Garching Deutschland
| | - Matthias J. Feige
- Center for Integrated Protein Science an der Fakultät für Chemie; Technische Universität München; Garching Deutschland
- Institute for Advanced Study; Technische Universität München; Lichtenbergstraße 2a 85748 Garching Deutschland
| | - Bernhard Rieger
- WACKER-Lehrstuhl für Makromolekulare Chemie; Technische Universität München; Deutschland
- Zentralinstitut für Katalyseforschung; Garching Deutschland
| | - Job Boekhoven
- Fakultät für Chemie; Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
- Institute for Advanced Study; Technische Universität München; Lichtenbergstraße 2a 85748 Garching Deutschland
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Grötsch RK, Angı A, Mideksa YG, Wanzke C, Tena-Solsona M, Feige MJ, Rieger B, Boekhoven J. Dissipative Self-Assembly of Photoluminescent Silicon Nanocrystals. Angew Chem Int Ed Engl 2018; 57:14608-14612. [PMID: 30040877 DOI: 10.1002/anie.201807937] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Indexed: 12/12/2022]
Abstract
Solutions of silicon nanocrystals (SiNCs) are used in a diverse range of applications because of their tunable photoluminescence, biocompatibility, and the abundance of Si. In dissipative supramolecular materials, self-assembly of molecules or nanoparticles is driven by a chemical reaction network that irreversible consumes fuel. The properties of the emerging structures are controlled by the kinetics of the underlying chemical reaction network. Herein, we demonstrate the dissipative self-assembly of photoluminescent SiNCs driven by a chemical fuel. A chemical reaction induces self-assembly of the water-soluble SiNCs. However, the assemblies are transient, and when the chemical reaction network runs out of fuel, the SiNCs disassemble. The lifetime of the assemblies is controlled by the amount of fuel added. As an application of the transient supramolecular material, we demonstrate that the platform can be used to control the delayed uptake of the nanocrystals by mammalian cells.
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Affiliation(s)
- Raphael K Grötsch
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, 85748, Garching, Germany
| | - Arzu Angı
- WACKER-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Catalysis Research Center, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
| | - Yonatan G Mideksa
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, 85748, Garching, Germany
| | - Caren Wanzke
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, 85748, Garching, Germany
| | - Marta Tena-Solsona
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, 85748, Garching, Germany
| | - Matthias J Feige
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, 85748, Garching, Germany
| | - Bernhard Rieger
- WACKER-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Catalysis Research Center, Ernst-Otto-Fischer-Strasse 1, 85748, Garching, Germany
| | - Job Boekhoven
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.,Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, 85748, Garching, Germany
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Boekhoven J, Didier D. Vereinigung von Kunst und Wissenschaft: Die 53. Bürgenstock-Konferenz. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Job Boekhoven
- Fakultät für Chemie und Institute for Advanced Study; Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Dorian Didier
- Fakultät für Chemie und Pharmazie; Ludwig-Maximilians-Universität; Butenandtstraße 5-13 81377 München Deutschland
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Boekhoven J, Didier D. Merging Art and Science-The 53rd Bürgenstock Conference. Angew Chem Int Ed Engl 2018; 57:10011-10014. [PMID: 30003659 DOI: 10.1002/anie.201806142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
For the 53rd time, the Bürgenstock Conference gathered some of the most gifted scientists and rising stars in organic, physical, and bioorganic chemistry. Orchestrated by Ilan Marek (President) and his successor, Véronique Gouverneur, the synergy between art and science took place in Brunnen, Switzerland, with a beatiful view over Lake Lucerne.
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Affiliation(s)
- Job Boekhoven
- Department of Chemistry and Institute for Advanced Study, Technische Universität München, Lichtenbergstraße 4, 85748, Garching, Germany
| | - Dorian Didier
- Department of Chemistry and Pharmacy, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377, Munich, Germany
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Rieß B, Wanzke C, Tena-Solsona M, Grötsch RK, Maity C, Boekhoven J. Dissipative assemblies that inhibit their deactivation. Soft Matter 2018; 14:4852-4859. [PMID: 29845136 DOI: 10.1039/c8sm00822a] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dissipative self-assembly is a process in which energy-consuming chemical reaction networks drive the assembly of molecules. Prominent examples from biology include the GTP-fueled microtubule and ATP-driven actin assembly. Pattern formation and oscillatory behavior are some of the unique properties of the emerging assemblies. While artificial counterparts exist, researchers have not observed such complex responses. One reason for the missing complexity is the lack of feedback mechanisms of the assemblies on their chemical reaction network. In this work, we describe the dissipative self-assembly of colloids that protect the hydrolysis of their building blocks. The mechanism of inhibition is generalized and explored for other building blocks. We show that we can tune the level of inhibition by the assemblies. Finally, we show that the robustness of the assemblies towards starvation is affected by the degree of inhibition.
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Affiliation(s)
- Benedikt Rieß
- Department of Chemistry, Technical University of Munich, Lichtenbergstrasse 4, 85748 Garching, Germany.
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Robidillo CJT, Islam MA, Aghajamali M, Faramus A, Sinelnikov R, Zhang X, Boekhoven J, Veinot JGC. Functional Bioinorganic Hybrids from Enzymes and Luminescent Silicon-Based Nanoparticles. Langmuir 2018; 34:6556-6569. [PMID: 29758156 DOI: 10.1021/acs.langmuir.8b01119] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study reports the preparation of functional bioinorganic hybrid materials exhibiting catalytic activity and photoluminescent properties arising from the combination of enzymes and freestanding silicon-based nanoparticles. The hybrid materials reported herein have potential applications in biological sensing/imaging and theranostics, as they combine long-lived silicon-based nanoparticle photoluminescence with substrate-specific enzymatic activity. Thermal hydrosilylation of undecenoic acid and alkene-terminated poly(ethylene oxide) with hydride-terminated silicon nanocrystals afforded nanoparticles functionalized with a mixed surface made up of carboxylic acid and poly(ethylene oxide) moieties. These silicon-based nanoparticles were subsequently conjugated with prototypical enzymes through the carbodiimide-mediated amide coupling reaction in order to form bioinorganic hybrids that display solubility and photostability in phosphate buffer, photoluminescence (λmax = 630 nm), and enzymatic activity. They were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), dynamic light scattering analysis (DLS), photoluminescence spectroscopy, and pertinent enzyme activity assays.
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Affiliation(s)
- Christopher Jay T Robidillo
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
- Department of Physical Sciences and Mathematics , University of the Philippines Manila , P. Faura Street , Ermita, Manila 1000 , Philippines
| | - Muhammad Amirul Islam
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
| | - Maryam Aghajamali
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
| | - Angelique Faramus
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
| | - Regina Sinelnikov
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
| | - Xiyu Zhang
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
| | - Job Boekhoven
- Department of Chemistry , Technische Universität München , Lichtenbergstrasse 4 , 85748 Garching , Germany
- Institute for Advanced Study , Technische Universität München , Lichtenbergstrasse 2a , 85748 Garching , Germany
| | - Jonathan G C Veinot
- Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada
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van Rossum SAP, Tena-Solsona M, van Esch JH, Eelkema R, Boekhoven J. Dissipative out-of-equilibrium assembly of man-made supramolecular materials. Chem Soc Rev 2018; 46:5519-5535. [PMID: 28703817 DOI: 10.1039/c7cs00246g] [Citation(s) in RCA: 312] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The use of dissipative self-assembly driven by chemical reaction networks for the creation of unique structures is gaining in popularity. In dissipative self-assembly, precursors are converted into self-assembling building blocks by the conversion of a source of energy, typically a photon or a fuel molecule. The self-assembling building block is intrinsically unstable and spontaneously reverts to its original precursor, thus giving the building block a limited lifetime. As a result, its presence is kinetically controlled, which gives the associated supramolecular material unique properties. For instance, formation and properties of these materials can be controlled over space and time by the kinetics of the coupled reaction network, they are autonomously self-healing and they are highly adaptive to small changes in their environment. By means of an example of a biological dissipative self-assembled material, the unique concepts at the basis of these supramolecular materials will be discussed. We then review recent efforts towards man-made dissipative assembly of structures and how their unique material properties have been characterized. In order to help further the field, we close with loosely defined design rules that are at the basis of the discussed examples.
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Affiliation(s)
- Susan A P van Rossum
- Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629HZ Delft, The Netherlands.
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