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Abbas M, Law JO, Grellscheid SN, Huck WTS, Spruijt E. Peptide-Based Coacervate-Core Vesicles with Semipermeable Membranes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2202913. [PMID: 35796384 DOI: 10.1002/adma.202202913] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/09/2022] [Indexed: 06/15/2023]
Abstract
Coacervates droplets have long been considered as potential protocells to mimic living cells. However, these droplets lack a membrane and are prone to coalescence, limiting their ability to survive, interact, and organize into higher-order assemblies. This work shows that tyrosine-rich peptide conjugates can undergo liquid-liquid phase separation in a well-defined pH window and transform into stable membrane-enclosed protocells by enzymatic oxidation and cross-linking at the liquid-liquid interface. The oxidation of the tyrosine-rich peptides into dityrosine creates a semipermeable, flexible membrane around the coacervates with tunable thickness, which displays strong intrinsic fluorescence, and stabilizes the coacervate protocells against coalescence. The membranes have an effective molecular weight cut-off of 2.5 kDa, as determined from the partitioning of small dyes and labeled peptides, RNA, and polymers into the membrane-enclosed coacervate protocells. Flicker spectroscopy reveals a membrane bending rigidity of only 0.1kB T, which is substantially lower than phospholipid bilayers despite a larger membrane thickness. Finally, it is shown that enzymes can be stably encapsulated inside the protocells and be supplied with substrates from outside, which opens the way for these membrane-bound compartments to be used as molecularly crowded artificial cells capable of communication or as a vehicle for drug delivery.
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Affiliation(s)
- Manzar Abbas
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6525 AJ, The Netherlands
| | - Jack O Law
- Computational Biology Unit, University of Bergen, Bergen, 5020, Norway
| | - Sushma N Grellscheid
- Computational Biology Unit, University of Bergen, Bergen, 5020, Norway
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Wilhelm T S Huck
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6525 AJ, The Netherlands
| | - Evan Spruijt
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, Nijmegen, 6525 AJ, The Netherlands
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Xu F, Xu B, Chen H, Ju X, Gonzalez de Mejia E. Enhancement of DPP-IV inhibitory activity and the capacity for enabling GLP-1 secretion through RADA16-assisted molecular designed rapeseed peptide nanogels. Food Funct 2022; 13:5215-5228. [PMID: 35438092 DOI: 10.1039/d1fo04367f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The potential of pentapeptide IPQVS (RAP1) and octapeptide ELHQEEPL (RAP2) derived from rapeseed napin as natural dipeptidyl-peptidase IV (DPP-IV) inhibitors is promising. The objective was to develop a nanogel strategy to resist the hydrolysis of digestive and intestinal enzymes to enhance the DPP-IV inhibitory activity of RAP1 and RAP2, and stimulate glucagon-like peptide 1 (GLP-1) secretion of RAP2 by a RADA16-assisted molecular design. The linker of double Gly was used in the connection of RADA16 and the functional oligopeptide region (RAP1 and RAP2). Compared to the original oligopeptides, DPP-IV IC50 of the nanogels RADA16-RAP1 and RADA16-RAP2 decreased by 26.43% and 17.46% in Caco-2 cell monolayers, respectively. The results showed that the two nanogel peptides with no toxicity to cells had higher contents of stable β-sheet structures (increased by 5.6-fold and 5.2-fold, respectively) than the original oligopeptides, and a self-assembled fibrous morphology. Rheological results suggested that the nanogels RADA16-RAP1 and RADA16-RAP2 exhibit good rheological properties for potential injectable applications; the storage modulus (G') was 10 times higher than the low modulus (G''). Furthermore, the RAP2 and its RADA16-assisted nanogel peptide at the concentration of 250 μM significantly (P < 0.05) increased the release of GLP-1 by 35.46% through the calcium-sensing receptor pathway in the enteroendocrine STC-1 cells. Hence, the innovative and harmless nanogels with the sequence of RADA16-GG-Xn have the potential for use by oral and injection administration for treating or relieving type 2 diabetes.
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Affiliation(s)
- Feiran Xu
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.,Department of Food Science and Human Nutrition, Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 228 Edward R. Madigan Laboratory (ERML), 1201 West Gregory Drive, Urbana, Illinois 61801, USA.
| | - Baocai Xu
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China
| | - Hong Chen
- Department of Food Science and Human Nutrition, Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 228 Edward R. Madigan Laboratory (ERML), 1201 West Gregory Drive, Urbana, Illinois 61801, USA.
| | - Xingrong Ju
- National Engineering Laboratory for Cereal Fermentation Technology, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Elvira Gonzalez de Mejia
- Department of Food Science and Human Nutrition, Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 228 Edward R. Madigan Laboratory (ERML), 1201 West Gregory Drive, Urbana, Illinois 61801, USA.
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Marchetti A, Pizzi A, Bergamaschi G, Demitri N, Stollberg U, Diederichsen U, Pigliacelli C, Metrangolo P. Fibril Structure Demonstrates the Role of Iodine Labelling on a Pentapeptide Self-Assembly. Chemistry 2022; 28:e202104089. [PMID: 35084787 PMCID: PMC9306938 DOI: 10.1002/chem.202104089] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Indexed: 12/16/2022]
Abstract
Iodination has long been employed as a successful labelling strategy to gain structural insights into proteins and other biomolecules via several techniques, including Small Angle X-ray Scattering, Inductively Coupled Plasma Mass Spectrometer (ICP-MS), and single-crystal crystallography. However, when dealing with smaller biomolecular systems, interactions driven by iodine may significantly alter their self-assembly behaviour. The engineering of amyloidogenic peptides for the development of ordered nanomaterials has greatly benefitted from this possibility. Still, to date, iodination has exclusively been applied to aromatic residues. In this work, an aliphatic bis-iodinated amino acid was synthesized and included into a custom pentapeptide, which showed enhanced fibrillogenic behaviour. Peptide single crystal X-ray structure and powder X-ray diffraction on its dried water solution demonstrated the key role of iodine atoms in promoting intermolecular interactions that drive the peptide self-assembly into amyloid fibrils. These findings enlarge the library of halogenated moieties available for directing and engineering the self-assembly of amyloidogenic peptides.
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Affiliation(s)
- Alessandro Marchetti
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab)Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
| | - Andrea Pizzi
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab)Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
| | - Greta Bergamaschi
- Istituto di Scienze e Tecnologie ChimicheNational Research Council of ItalyVia M. Bianco 920131MilanoItaly
| | - Nicola Demitri
- Elettra – Sincrotrone TriesteS.S. 14 Km 163.5 in Area Science Park34149BasovizzaTriesteItaly
| | - Ulrike Stollberg
- Institute for Organic and Biomolecular ChemistryGeorg-August-University GöttingenTammannstr. 237077GöttingenGermany
| | - Ulf Diederichsen
- Institute for Organic and Biomolecular ChemistryGeorg-August-University GöttingenTammannstr. 237077GöttingenGermany
| | - Claudia Pigliacelli
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab)Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab)Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”Politecnico di MilanoVia L. Mancinelli 720131MilanoItaly
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Kim HL, Shin YS, Yang SH. Effect of poly(acrylic acid) on crystallization of calcium carbonate in a hydrogel. CrystEngComm 2022. [DOI: 10.1039/d1ce01687c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
As carbonate ions are diffused into an agarose hydrogel containing calcium ions and poly(acrylic acid), elliptical and spherical calcites are controllably formed depending on the concentration of poly(acrylic acid) and the position of the hydrogel.
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Affiliation(s)
- Hong Lyun Kim
- Department of Chemistry Education, Korea National University of Education, Chungbuk 28173, Korea
| | - Yu Seob Shin
- Department of Chemistry Education, Korea National University of Education, Chungbuk 28173, Korea
| | - Sung Ho Yang
- Department of Chemistry Education, Korea National University of Education, Chungbuk 28173, Korea
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Zhao DH, Yang J, Yao MH, Li CQ, Zhang B, Zhu D, Zhao YD, Liu B. An in situ synthesis of silver nanoparticle-loaded genetically engineered polypeptide nanogels for antibacterial and wound healing applications. Dalton Trans 2021; 49:12049-12055. [PMID: 32815955 DOI: 10.1039/d0dt00751j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fact that the wounds infected by bacteria are difficult to heal is a major health issue. Herein, we synthesized silver nanoparticle-loaded polypeptide nanogels via an in situ method using UV irradiation, which is a relatively green and simple method. The size of the nanogel and silver nanoparticles could be regulated by changing the concentrations of the polypeptide and silver ions, respectively. Because the polypeptide PC10ARGD was histidine-rich and biodegradable, the as-synthesized silver nanogels exhibited low toxicity and good biocompatibility. The in vitro antibacterial experiments showed that the silver nanogels presented excellent antibacterial activity against both Gram-negative and Gram-positive bacteria. Moreover, silver nanogels had a good effect as an antibacterial and wound healing agent in vivo. These findings provide a new strategy and theoretical basis for the synthesis and application of silver nanoparticles.
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Affiliation(s)
- Dong-Hui Zhao
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Collaborative Innovation Center for Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China.
| | - Jie Yang
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Collaborative Innovation Center for Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China.
| | - Ming-Hao Yao
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, P. R. China
| | - Chao-Qing Li
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Collaborative Innovation Center for Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China.
| | - Bin Zhang
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Collaborative Innovation Center for Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China.
| | - Dan Zhu
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Collaborative Innovation Center for Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China. and Key Laboratory of Biomedical Photonics (HUST), Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Yuan-Di Zhao
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Collaborative Innovation Center for Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China. and Key Laboratory of Biomedical Photonics (HUST), Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
| | - Bo Liu
- Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics - Hubei Bioinformatics & Molecular Imaging Key Laboratory, Collaborative Innovation Center for Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China.
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