1
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Wagh L, Singh D, Kumar V, Upadhyay SN, Pakhira S, Das AK. Sonication-Induced Boladipeptide-Based Metallogel as an Efficient Electrocatalyst for the Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2024; 16:28307-28318. [PMID: 38771803 DOI: 10.1021/acsami.3c18637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Bioinspired, self-assembled hybrid materials show great potential in the field of energy conversion. Here, we have prepared a sonication-induced boladipeptide (HO-YF-AA-FY-OH (PBFY); AA = Adipic acid, F = l-phenylalanine, and Y = l-tyrosine) and an anchored, self-assembled nickel-based coordinated polymeric nanohybrid hydrogel (Ni-PBFY). The morphological studies of hydrogels PBFY and Ni-PBFY exhibit nanofibrillar network structures. XPS analysis has been used to study the self-assembled coordinated polymeric hydrogel Ni-PBFY-3, with the aim of identifying its chemical makeup and electronic state. XANES and EXAFS analyses have been used to examine the local electronic structure and coordination environment of Ni-PBFY-3. The xerogel of Ni-PBFY was used to fabricate the electrodes and is utilized in the OER (oxygen evolution reaction). The native hydrogel (PBFY) contains a gelator boladipeptide of 15.33 mg (20 mmol L-1) in a final volume of 1 mL. The metallo-hydrogel (Ni-PBFY-3) is prepared by combining 15.33 mg (20 mmol L-1) of boladipeptide (PBFY) with 3 mg (13 mmol L-1) of NiCl2·6H2O metal in a final volume of 1 mL. It displays an ultralow Tafel slope of 74 mV dec-1 and a lower overpotential of 164 mV at a 10 mA cm-2 current density in a 1 M KOH electrolyte, compared to other electrocatalysts under the same experimental conditions. Furthermore, the Ni-PBFY-3 electrocatalyst has been witnessed to be highly stable during 100 h of chronopotentiometry performance. To explore the OER mechanism in an alkaline medium, a theoretical calculation was carried out by employing the first-principles-based density functional theory (DFT) method. The computed results obtained by the DFT method further confirm that the Ni-PBFY-3 electrocatalyst has a high intrinsic activity toward the OER, and the value of overpotential obtained from the present experiment agrees well with the computed value of the overpotential. The biomolecule-assisted electrocatalytic results provide a new approach for designing efficient electrocatalysts, which could have significant implications in the field of green energy conversion.
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Affiliation(s)
- Lalita Wagh
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Indore 453552, India
| | - Devraj Singh
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Indore 453552, India
| | - Vikash Kumar
- Department of Physics, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, Madhya Pradesh, India
| | - Shrish Nath Upadhyay
- Department of Physics, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, Madhya Pradesh, India
| | - Srimanta Pakhira
- Department of Physics, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore 453552, Madhya Pradesh, India
- Centre for Advanced Electronics (CAE), Indian Institute of Technology Indore, Khandwa Road, Indore 453552, India
| | - Apurba K Das
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Indore 453552, India
- Centre for Advanced Electronics (CAE), Indian Institute of Technology Indore, Khandwa Road, Indore 453552, India
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2
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Hamley IW, Castelletto V, Hermida-Merino D, Rosenthal M. Cyclodextrin-Induced Suppression of PEG Crystallization from the Melt in a PEG-Peptide Conjugate. Chembiochem 2024:e202400396. [PMID: 38775269 DOI: 10.1002/cbic.202400396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/17/2024] [Indexed: 06/29/2024]
Abstract
The influence of alpha-cyclodextrin (αCD) on PEG crystallization is examined for a peptide-PEG conjugate, YYKLVFF-PEG3k comprising an amyloid peptide YYKLVFF linked to PEG with molar mass 3 kg mol-1. Remarkably, differential scanning calorimetry (DSC) and simultaneous synchrotron small-angle/wide-angle X-ray scattering (SAXS/WAXS) show that crystallization of PEG is suppressed by αCD, provided that the cyclodextrin content is sufficient. A hexagonal mesophase is formed instead. The αCD threading reduces the conformational flexibility of PEG, and hence suppresses crystallization. These results show that addition of cyclodextrins can be used to tune the crystallization of peptide-polymer conjugates and potentially other polymer/biomolecular hybrids.
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Affiliation(s)
- Ian W Hamley
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Valeria Castelletto
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Daniel Hermida-Merino
- DUBBLE-CRG @ ESRF, CS40220, The European Synchrotron, 71, Avenue des Martyrs, 38043, Grenoble Cedex 9, France
| | - Martin Rosenthal
- DUBBLE-CRG @ ESRF, CS40220, The European Synchrotron, 71, Avenue des Martyrs, 38043, Grenoble Cedex 9, France
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3
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Bagchi D, Maity A, Chakraborty A. Metal Ion-Induced Unusual Stability of the Metastable Vesicle-like Intermediates Evolving during the Self-Assembly of Phenylalanine: Prominent Role of Surface Charge Inversion. J Phys Chem Lett 2024; 15:4468-4476. [PMID: 38631022 DOI: 10.1021/acs.jpclett.4c00444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
The underlying mechanism and intermediate formation in the self-assembly of aromatic amino acids, peptides, and proteins remain elusive despite numerous reports. We, for the first time, report that one can stabilize the intermediates by tuning the metal ion-amino acid interaction. Microscopic and spectroscopic investigations of the self-assembly of carboxybenzyl (Z)-protected phenylalanine (ZF) reveal that the bivalent metal ions eventually lead to the formation of fibrillar networks similar to blank ZF whereas the trivalent ions develop vesicle-like intermediates that do not undergo fibrillation for a prolonged time. The time-lapse measurement of surface charge reveals that the surface charge of blank ZF and in the presence of bivalent metal ions changes from a negative value to zero, implying unstable intermediates leading to the fibril network. Strikingly, a prominent charge inversion from an initial negative value to a positive value in the presence of trivalent metal ions imparts unusual stability to the metastable intermediates.
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Affiliation(s)
- Debanjan Bagchi
- Indian Institute of Technology Indore, Department of Chemistry, Indore 453552, Madhya Pradesh, India
| | - Avijit Maity
- Indian Institute of Technology Indore, Department of Chemistry, Indore 453552, Madhya Pradesh, India
| | - Anjan Chakraborty
- Indian Institute of Technology Indore, Department of Chemistry, Indore 453552, Madhya Pradesh, India
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4
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Cheng L, De Leon-Rodriguez LM, Gilbert EP, Loo T, Petters L, Yang Z. Self-assembly and hydrogelation of a potential bioactive peptide derived from quinoa proteins. Int J Biol Macromol 2024; 259:129296. [PMID: 38199549 DOI: 10.1016/j.ijbiomac.2024.129296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/25/2023] [Accepted: 01/05/2024] [Indexed: 01/12/2024]
Abstract
In this work the identification of peptides derived from quinoa proteins which could potentially self-assemble, and form hydrogels was carried out with TANGO, a statistical mechanical based algorithm that predicts β-aggregate propensity of peptides. Peptides with the highest aggregate propensity were subjected to gelling screening experiments from which the most promising bioactive peptide with sequence KIVLDSDDPLFGGF was selected. The self-assembling and hydrogelation properties of the C-terminal amidated peptide (KIVLDSDDPLFGGF-NH2) were studied. The effect of concentration, pH, and temperature on the secondary structure of the peptide were probed by circular dichroism (CD), while its nanostructure was studied by transmission electron microscopy (TEM) and small-angle neutron scattering (SANS). Results revealed the existence of random coil, α-helix, twisted β-sheet, and well-defined β-sheet secondary structures, with a range of nanostructures including elongated fibrils and bundles, whose proportion was dependant on the peptide concentration, pH, or temperature. The self-assembly of the peptide is demonstrated to follow established models of amyloid formation, which describe the unfolded peptide transiting from an α-helix-containing intermediate into β-sheet-rich protofibrils. The self-assembly is promoted at high concentrations, elevated temperatures, and pH values close to the peptide isoelectric point, and presumably mediated by hydrogen bond, hydrophobic and electrostatic interactions, and π-π interactions (from the F residue). At 15 mg/mL and pH 3.5, the peptide self-assembled and formed a self-supporting hydrogel exhibiting viscoelastic behaviour with G' (1 Hz) ~2300 Pa as determined by oscillatory rheology measurements. The study describes a straightforward method to monitor the self-assembly of plant protein derived peptides; further studies are needed to demonstrate the potential application of the formed hydrogels in food and biomedicine.
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Affiliation(s)
- Lirong Cheng
- Riddet Institute, Massey University, Palmerston North 4442, New Zealand
| | | | - Elliot Paul Gilbert
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee, NSW, Australia; Centre for Nutrition and Food Sciences, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Trevor Loo
- BioProtection Aotearoa, School of Natural Sciences, Massey University, Palmerston North 4442, New Zealand
| | - Ludwig Petters
- School of Natural Sciences, Massey University, Palmerston North 4442, New Zealand
| | - Zhi Yang
- School of Food and Advanced Technology, Massey University, Auckland 0632, New Zealand.
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5
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Kuila S, Dey S, Singh P, Shrivastava A, Nanda J. Phenylalanine-based fibrillar systems. Chem Commun (Camb) 2023; 59:14509-14523. [PMID: 37987167 DOI: 10.1039/d3cc04138g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Phenylketonuria (PKU) is an inborn metabolic disorder characterized by excess accumulation of phenylalanine (Phe) and its fibril formation, resulting in progressive intellectual disability. Several research groups have approached from various directions to understand the formation of toxic amyloid fibrils from the essential amino acid Phe. Different parameters like the nature of the solvent, pH, Phe concentration, temperature, etc. influence the fibril formation kinetics. In this article, we have summarized all major findings regarding the formation of Phe-based fibrils in aqueous and organic media and discussed how non-covalent interactions are involved in the self-assembly process using spectroscopic and microscopic techniques. The toxicity of Phe-based fibrils is compared with other neurodegenerative peptides. It is noted that the Phe-based fibrils can also induce various globular proteins into toxic fibrils. Later, we discuss the different approaches to inhibit fibril formation and reduce its toxicity. The presence of polyphenolic compounds, drugs, amino acids, nanoparticles, metal ions, crown ethers, and others showed a remarkable inhibitory effect on fibril formation. To the best of our knowledge, this is the first-ever etymological analysis of the Phe-fibrillar system and its inhibition to create a strong database against PKU.
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Affiliation(s)
- Soumen Kuila
- Department of Chemistry, University of North Bengal, Raja Rammohanpur, Siliguri 734013, West Bengal, India.
| | - Sukantha Dey
- Department of Chemistry, University of North Bengal, Raja Rammohanpur, Siliguri 734013, West Bengal, India.
| | - Pijush Singh
- Department of Chemistry, University of North Bengal, Raja Rammohanpur, Siliguri 734013, West Bengal, India.
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Akash Shrivastava
- Department of Chemistry, University of North Bengal, Raja Rammohanpur, Siliguri 734013, West Bengal, India.
| | - Jayanta Nanda
- Department of Chemistry, University of North Bengal, Raja Rammohanpur, Siliguri 734013, West Bengal, India.
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6
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Hu X, Liao M, Ding K, Wang J, Xu H, Tao K, Zhou F, Lu JR. Neutron reflection and scattering in characterising peptide assemblies. Adv Colloid Interface Sci 2023; 322:103033. [PMID: 37931380 DOI: 10.1016/j.cis.2023.103033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/09/2023] [Accepted: 10/20/2023] [Indexed: 11/08/2023]
Abstract
Self-assemblies of de novo designed short peptides at interface and in bulk solution provide potential platforms for developing applications in many medical and technological areas. However, characterising how bioinspired supramolecular nanostructures evolve with dynamic self-assembling processes and respond to different stimuli remains challenging. Neutron scattering technologies including small angle neutron scattering (SANS) and neutron reflection (NR) can be advantageous and complementary to other state-of-the-art techniques in tracing structural changes under different conditions. With more neutron sources now available, SANS and NR are becoming increasingly popular in studying self-assembling processes of diverse peptide and protein systems, but the difficulty in experimental manipulation and data analysis can deter beginners. This review will introduce the basic theory, general experimental setup and data analysis of SANS and NR, followed by provision of their applications in characterising interfacial and solution self-assemblies of representative peptides and proteins. SANS and NR are remarkably effective in determining the morphological features self-assembled short peptides, especially size and shape transitions as a result of either sequence changes or in response to environmental stimuli, demonstrating the unique capability of NR and SANS in unravelling the interactive processes. These examples highlight the potential of NR and SANS in supporting the development of novel short peptides and proteins as biopharmaceutical candidates in the fight against many diseases and infections that share common features of membrane interactive processes.
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Affiliation(s)
- Xuzhi Hu
- Biological Physics Group, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK.; Lanzhou Institute of Chemical Physics, Tianshui Middle Road, Lanzhou 730000, Gansu, China
| | - Mingrui Liao
- Biological Physics Group, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Ke Ding
- Biological Physics Group, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Jiqian Wang
- Centre for Bioengineering and Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Hai Xu
- Centre for Bioengineering and Biotechnology, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao 266580, China
| | - Kai Tao
- State Key Laboratory of Fluid Power and Mechatronic Systems, Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310058, China; Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Centre, Zhejiang University, Hangzhou 311215, China
| | - Feng Zhou
- Lanzhou Institute of Chemical Physics, Tianshui Middle Road, Lanzhou 730000, Gansu, China
| | - Jian R Lu
- Biological Physics Group, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK..
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7
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Castelletto V, Kowalczyk RM, Seitsonen J, Hamley IW. Tuning the Solution Self-Assembly of a Peptide-PEG (Polyethylene Glycol) Conjugate with α-Cyclodextrin. Chembiochem 2023; 24:e202300472. [PMID: 37529857 DOI: 10.1002/cbic.202300472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/03/2023]
Abstract
Cyclodextrins are saccharide ring molecules which act as host cavities that can encapsulate small guest molecules or thread polymer chains. We investigate the influence of alpha-cyclodextrin (αCD) on the aqueous solution self-assembly of a peptide-polymer conjugate YYKLVFF-PEG3K previously studied by our group [Castelletto et al., Polym. Chem., 2010, 1, 453-459]. This conjugate comprises a designed amyloid-forming peptide YYKLVFF that contains the KLVFF sequence from Amyloid β peptide, Aβ16-20, along with two aromatic tyrosine residues to enhance hydrophobicity, as well as polyethylene glycol PEG with molar mass 3 kg mol-1 . The conjugate self-assembles into β-sheet fibrils in aqueous solution. Here we show that complexation with αCD instead generates free-floating nanosheets in aqueous solution (with a β-sheet structure). The nanosheets comprise a bilayer with a hydrophobic peptide core and highly swollen PEG outer layers. The transition from fibrils to nanosheets is driven by an increase in the number of αCD molecules threaded on the PEG chains, as determined by 1 H NMR spectroscopy. These findings point to the use of cyclodextrin additives as a powerful means to tune the solution self-assembly in peptide-polymer conjugates and potentially other polymer/biomolecular hybrids.
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Affiliation(s)
- Valeria Castelletto
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Radoslaw M Kowalczyk
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Jani Seitsonen
- Nanomicroscopy Center, Aalto University, Puumiehenkuja 2, 02150, Espoo, Finland
| | - Ian W Hamley
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading, RG6 6AD, UK
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8
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Ricardo MG, Seeberger PH. Merging Solid-Phase Peptide Synthesis and Automated Glycan Assembly to Prepare Lipid-Peptide-Glycan Chimeras. Chemistry 2023; 29:e202301678. [PMID: 37358020 DOI: 10.1002/chem.202301678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 06/27/2023]
Abstract
Biomaterials with improved biological features can be obtained by conjugating glycans to nanostructured peptides. Creating peptide-glycan chimeras requires superb chemoselectivity. We expedite access to such chimeras by merging peptide and glycan solid-phase syntheses employing a bifunctional monosaccharide. The concept was explored in the context of the on-resin generation of a model α(1→6)tetramannoside linked to peptides, lipids, steroids, and adamantane. Chimeras containing a β(1→6)tetraglucoside and self-assembling peptides such as FF, FFKLVFF, and the amphiphile palmitoyl-VVVAAAKKK were prepared in a fully automated manner. The robust synthetic protocol requires a single purification step to obtain overall yields of about 20 %. The β(1→6)tetraglucoside FFKLVFF chimera produces micelles rather than nanofibers formed by the peptide alone as judged by microscopy and circular dichroism. The peptide amphiphile-glycan chimera forms a disperse fiber network, creating opportunities for new glycan-based nanomaterials.
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Affiliation(s)
- Manuel G Ricardo
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476, Potsdam, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476, Potsdam, Germany
- Institute of Chemistry and Biochemistry, Freie Universitaet Berlin, Arnimallee 22, 14195, Berlin, Germany
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9
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Wang Q, Zhou FP, Tao DD, Wei JH, Cai R, Jiang YB. Amyloid peptide hydrogels via formation of coordination polymers with Ag + by its core peptide equipped with a C-cysteine. Chem Commun (Camb) 2023; 59:9599-9602. [PMID: 37461336 DOI: 10.1039/d3cc02076b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
We report that the core sequence of amyloid β (Aβ) peptide, KLVFF, when equipped with a C-terminal cysteine residue, exhibited an extremely low minimum hydrogelation concentration of 0.05 wt% in the presence of Ag+ in pH 5 buffer, with this concentration 2 orders of magnitude lower than that of the pentapeptide itself. The CD signal of the Ag+-L-KLVFFC hydrogel was observed to be sensitive to the early-stage aggregation of amyloid β peptide.
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Affiliation(s)
- Qian Wang
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Fu-Peng Zhou
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Dan-Dan Tao
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Jin-Hong Wei
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Rui Cai
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
| | - Yun-Bao Jiang
- Department of Chemistry, College of Chemistry and Chemical Engineering, The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China.
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10
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Dayani L, Aliomrani M, Hashempour H, Varshosaz J, Sadeghi Dinani M, Taheri A. Cyclotide Nanotubes as a Novel Potential Drug-Delivery System: Characterization and Biocompatibility. Int J Pharm 2023:123104. [PMID: 37277089 DOI: 10.1016/j.ijpharm.2023.123104] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/29/2023] [Accepted: 06/01/2023] [Indexed: 06/07/2023]
Abstract
Cyclotides are a class of cyclic peptides that can be self-assembled. This study aimed to discover the properties of cyclotide nanotubes. We performed differential scanning calorimetric (DSC) to characterize their properties. Then, we incorporated the coumarin as a probe and identified the morphology of nanostructures. The stability of cyclotide nanotubes after 3 months of keeping at -20 °C was determined by field emission scanning electron microscopy (FESEM). The cytocompatibility of cyclotide nanotubes was evaluated on peripheral blood mononuclear cells. In vivo, studies were also conducted on female C57BL/6 mice by intraperitoneally administration of nanotubes at 5, 50, and 100 mg/kg doses. Blood sampling was done before and 24 h after nanotube administration and complete blood count tests were conducted. DSC thermogram showed that the cyclotide nanotubes were stable after heating until 200 °C. Fluorescence microscopy images proved that the self-assembled structures of cyclotide can encapsulate the coumarin. FESEM proved that these nanotubes were stable even after 3 months. The results of the cytotoxicity assay and in-vivo study confirmed that these novel prepared nanotubes were biocompatible. These results suggested that the cyclotide nanotubes could be considered as a new carrier in biological fields while they are biocompatible.
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Affiliation(s)
- Ladan Dayani
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Mehdi Aliomrani
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Hossein Hashempour
- Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran.
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Pharmaceutics, Faculty of Pharmacy and Novel Drug Delivery Systems Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Masoud Sadeghi Dinani
- Department of Pharmacognosy, School of pharmacy and pharmaceutical sciences, Isfahan University of medical sciences, Isfahan, Iran.
| | - Azade Taheri
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Pharmaceutics, Faculty of Pharmacy and Novel Drug Delivery Systems Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
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11
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Edirisinghe DIU, D'Souza A, Ramezani M, Carroll RJ, Chicón Q, Muenzel CL, Soule J, Monroe MBB, Patteson AE, Makhlynets OV. Antibacterial and Cytocompatible pH-Responsive Peptide Hydrogel. Molecules 2023; 28:molecules28114390. [PMID: 37298865 DOI: 10.3390/molecules28114390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 06/12/2023] Open
Abstract
A short peptide, FHHF-11, was designed to change stiffness as a function of pH due to changing degree of protonation of histidines. As pH changes in the physiologically relevant range, G' was measured at 0 Pa (pH 6) and 50,000 Pa (pH 8). This peptide-based hydrogel is antimicrobial and cytocompatible with skin cells (fibroblasts). It was demonstrated that the incorporation of unnatural AzAla tryptophan analog residue improves the antimicrobial properties of the hydrogel. The material developed can have a practical application and be a paradigm shift in the approach to wound treatment, and it will improve healing outcomes for millions of patients each year.
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Affiliation(s)
| | - Areetha D'Souza
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA
| | - Maryam Ramezani
- Biomedical and Chemical Engineering, Syracuse University, Bowne Hall, Syracuse, NY 13210, USA
| | - Robert J Carroll
- Department of Physics, Syracuse University, Syracuse, NY 13210, USA
| | - Quenten Chicón
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA
| | - Cheyene L Muenzel
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA
| | - Jonathan Soule
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA
| | | | | | - Olga V Makhlynets
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA
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12
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Unnikrishnan AC, Sushana Thennarasu A, Saveri P, Pandurangan S, Deshpande AP, Ayyadurai N, Shanmugam G. π-System Functionalization Transforms Amyloidogenic Peptide Fragment of Human Islet Amyloid Polypeptide into a Super Hydrogelator. Chem Asian J 2023; 18:e202201235. [PMID: 36567257 DOI: 10.1002/asia.202201235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 12/27/2022]
Abstract
While a considerable number of ultra-short/short amyloid peptides have been reported to form 3D supramolecular hydrogels, they all possess high minimum gelation concentration (MGC) (≥1 wt%), which preclude their applications. In this context, we demonstrate that functionalisation of a well-known amyloidogenic ultra-short peptide fragment NFGAIL (IAPf) of human Islet amyloid polypeptide with a π-system (Fluorenyl, Fm) at the N-terminus of the peptide (Fm-IAPf) yield not only highly thermostable hydrogel at physiological pH but also exhibited super gelator nature as the MGC (0.08 wt%) falls below 0.1 wt%. Various experimental results confirmed that aromatic π-π interactions from fluorenyl moieties and hydrogen bonding interactions between the IAPf drive the self-assembly/fibril formation. Fm-IAPf is the first super hydrogelator derived from amyloid-based ultra-short peptides, to the best of our knowledge. We strongly believe that this report, i. e., functionalization of an amyloid peptide with π-system, provides a lead to develop super hydrogelators from other amyloid-forming peptide fragments for their potential applications.
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Affiliation(s)
- Anagha C Unnikrishnan
- Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Abinaya Sushana Thennarasu
- Biological Materials Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India
| | - Puchalapalli Saveri
- Department of Chemical Engineering, Indian Institute of Technology Madras, Adyar, 600036, Chennai, India
| | - Suryalakshmi Pandurangan
- Biochemistry & Biotechnology Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India
| | - Abhijit P Deshpande
- Department of Chemical Engineering, Indian Institute of Technology Madras, Adyar, 600036, Chennai, India
| | - Niraikulam Ayyadurai
- Biochemistry & Biotechnology Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India
| | - Ganesh Shanmugam
- Organic & Bioorganic Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) -, Central Leather Research Institute (CLRI), Adyar, 600020, Chennai, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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13
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Batra R, Loeffler TD, Chan H, Srinivasan S, Cui H, Korendovych IV, Nanda V, Palmer LC, Solomon LA, Fry HC, Sankaranarayanan SKRS. Machine learning overcomes human bias in the discovery of self-assembling peptides. Nat Chem 2022; 14:1427-1435. [PMID: 36316409 PMCID: PMC9844539 DOI: 10.1038/s41557-022-01055-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/01/2022] [Indexed: 12/23/2022]
Abstract
Peptide materials have a wide array of functions, from tissue engineering and surface coatings to catalysis and sensing. Tuning the sequence of amino acids that comprise the peptide modulates peptide functionality, but a small increase in sequence length leads to a dramatic increase in the number of peptide candidates. Traditionally, peptide design is guided by human expertise and intuition and typically yields fewer than ten peptides per study, but these approaches are not easily scalable and are susceptible to human bias. Here we introduce a machine learning workflow-AI-expert-that combines Monte Carlo tree search and random forest with molecular dynamics simulations to develop a fully autonomous computational search engine to discover peptide sequences with high potential for self-assembly. We demonstrate the efficacy of the AI-expert to efficiently search large spaces of tripeptides and pentapeptides. The predictability of AI-expert performs on par or better than our human experts and suggests several non-intuitive sequences with high self-assembly propensity, outlining its potential to overcome human bias and accelerate peptide discovery.
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Affiliation(s)
- Rohit Batra
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology (IIT) Madras, Chennai, India
| | - Troy D Loeffler
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
- Department of Mechanical and Industrial Engineering, University of Illinois, Chicago, IL, USA
| | - Henry Chan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
- Department of Mechanical and Industrial Engineering, University of Illinois, Chicago, IL, USA
| | - Srilok Srinivasan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - Honggang Cui
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | | | - Vikas Nanda
- Center for Advanced Biotechnology and Medicine, Rutgers University, Piscataway, NJ, USA
| | - Liam C Palmer
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Lee A Solomon
- Department of Chemistry and Biochemistry, George Mason University, Manassas, VA, USA
| | - H Christopher Fry
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA.
| | - Subramanian K R S Sankaranarayanan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA.
- Department of Mechanical and Industrial Engineering, University of Illinois, Chicago, IL, USA.
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14
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Scelsi A, Bochicchio B, Smith AM, Laezza A, Saiani A, Pepe A. Hydrogels from the Assembly of SAA/Elastin-Inspired Peptides Reveal Non-Canonical Nanotopologies. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227901. [PMID: 36432002 PMCID: PMC9698559 DOI: 10.3390/molecules27227901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/31/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022]
Abstract
Peptide-based hydrogels are of great interest in the biomedical field according to their biocompatibility, simple structure and tunable properties via sequence modification. In recent years, multicomponent assembly of peptides have expanded the possibilities to produce more versatile hydrogels, by blending gelating peptides with different type of peptides to add new features. In the present study, the assembly of gelating P5 peptide SFFSF blended with P21 peptide, SFFSFGVPGVGVPGVGSFFSF, an elastin-inspired peptides or, alternatively, with FF dipeptide, was investigated by oscillatory rheology and different microscopy techniques in order to shed light on the nanotopologies formed by the self-assembled peptide mixtures. Our data show that, depending on the added peptides, cooperative or disruptive assembly can be observed giving rise to distinct nanotopologies to which correspond different mechanical properties that could be exploited to fabricate materials with desired properties.
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Affiliation(s)
- Alessandra Scelsi
- Laboratory of Bioinspired Materials (LABIM), Department of Science, University of Basilicata, 85100 Potenza, Italy
| | - Brigida Bochicchio
- Laboratory of Bioinspired Materials (LABIM), Department of Science, University of Basilicata, 85100 Potenza, Italy
| | - Andrew M. Smith
- Department of Materials, Manchester Institute of Biotechnology, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK
| | - Antonio Laezza
- Laboratory of Bioinspired Materials (LABIM), Department of Science, University of Basilicata, 85100 Potenza, Italy
| | - Alberto Saiani
- Department of Materials, Manchester Institute of Biotechnology, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK
| | - Antonietta Pepe
- Laboratory of Bioinspired Materials (LABIM), Department of Science, University of Basilicata, 85100 Potenza, Italy
- Correspondence: ; Tel.: +39-09-7120-5486
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15
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Du H, Wang L, Lu K, Pan B, Liu J. YAFAF-Based Hydrogel: Characterization, Mechanism, and Factors Influencing Micro-organization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10669-10679. [PMID: 35976795 DOI: 10.1021/acs.jafc.2c04505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The YAFAF-based hydrogel was a three-dimensional network cross-linked by grooved fiber bundles. The fiber bundles were formed by entanglement of fibrils with a diameter of 2 nm, and the surface of the fibrils also presented grooves. Spectroscopic analysis revealed that the main secondary structures were β-sheets and β-turns, which led to the grooved feature of fibrils. In comparison of the nuclear magnetic resonance spectra of peptide solutions at 313 and 277 K, the nuclear Overhauser effects can be clearly observed, indicating that hydrogen-bondings and π-π stacking interactions play important roles in self-assembly. The micro-organization of the self-assemblies was affected by the ratio of solvents (xA) remarkably. Unexpectedly, xA of 0.05 produced hollow spherical aggregates. The result of these investigations on the mechanism and organization of the YAFAF-based hydrogel can contribute to the development of strategies using hydrogels in the food industry.
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Affiliation(s)
- Heng Du
- Food Science and Technology, College of Food Science and Engineering, Henan University of Technology, 100 Lianhua Road, Zhengzhou, Henan 450001, People's Republic of China
| | - Lan Wang
- Peptides Chemistry, School of Chemical Engineering and Food Science, Zhengzhou University of Technology, 18 Yingcai Road, Zhengzhou, Henan 450044, People's Republic of China
| | - Kui Lu
- Peptides Chemistry, School of Chemical Engineering and Food Science, Zhengzhou University of Technology, 18 Yingcai Road, Zhengzhou, Henan 450044, People's Republic of China
| | - Boyuan Pan
- Peptides Chemistry, School of Chemistry and Chemical Engineering, Henan University of Technology, 100 Lianhua Road, Zhengzhou, Henan 450001, People's Republic of China
| | - Jun Liu
- Chemical Analysis, College of Food Science and Engineering, Institute of Grain and Oil Standardization, Henan University of Technology, 100 Lianhua Road, Zhengzhou, Henan 450001, People's Republic of China
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16
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On the Aggregation of Apolipoprotein A-I. Int J Mol Sci 2022; 23:ijms23158780. [PMID: 35955915 PMCID: PMC9369196 DOI: 10.3390/ijms23158780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/30/2022] [Accepted: 08/02/2022] [Indexed: 11/17/2022] Open
Abstract
In vivo, apolipoprotein A-I (ApoA-I) is commonly found together with lipids in so-called lipoprotein particles. The protein has also been associated with several diseases—such as atherosclerosis and amyloidosis—where insoluble aggregates containing ApoA-I are deposited in various organs or arteries. The deposited ApoA-I has been found in the form of amyloid fibrils, suggesting that amyloid formation may be involved in the development of these diseases. In the present study we investigated ApoA-I aggregation into amyloid fibrils and other aggregate morphologies. We studied the aggregation of wildtype ApoA-I as well as a disease-associated mutant, ApoA-I K107Δ, under different solution conditions. The aggregation was followed using thioflavin T fluorescence intensity. For selected samples the aggregates formed were characterized in terms of size, secondary structure content, and morphology using circular dichroism spectroscopy, dynamic light scattering, atomic force microscopy and cryo transmission electron microscopy. We find that ApoA-I may form globular protein-only condensates, in which the α-helical conformation of the protein is retained. The protein in its unmodified form appears resistant to amyloid formation; however, the conversion into amyloid fibrils rich in β-sheet is facilitated by oxidation or mutation. In particular, the K107Δ mutant shows higher amyloid formation propensity, and the end state appears to be a co-existence of β-sheet rich amyloid fibrils and α-helix-rich condensates.
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17
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Ghrayeb M, Chai L. Demonstrating Principle Aspects of Peptide‐ and Protein‐ Based Hydrogels Using Metallogels Examples. Isr J Chem 2022. [DOI: 10.1002/ijch.202200011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mnar Ghrayeb
- Institute of Chemistry The Hebrew University of Jerusalem Edmond J. Safra campus Jerusalem 91904 Israel
| | - Liraz Chai
- Institute of Chemistry The Hebrew University of Jerusalem Edmond J. Safra campus Jerusalem 91904 Israel
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18
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Yamazaki M, Ikeda K, Kameda T, Nakao H, Nakano M. Kinetic Mechanism of Amyloid-β-(16-22) Peptide Fibrillation. J Phys Chem Lett 2022; 13:6031-6036. [PMID: 35748616 DOI: 10.1021/acs.jpclett.2c01065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The kinetic mechanism of amyloid fibril formation by a peptide fragment containing seven residues of the amyloid-β protein Aβ-(16-22) was investigated. We found that the N- and C-terminal unprotected Aβ-(16-22), containing no aggregation nuclei, showed rapid fibrillation within seconds to minutes in a neutral aqueous buffer solution. The fibrillation kinetics were well described by the nucleation-elongation model, suggesting that primary nucleation was the rate-limiting step. On the basis of both experimental and theoretical analyses, the aggregated nucleus was estimated to be composed of 6-7 peptide molecules, wherein the two β-sheets were associated with their hydrophobic surfaces. Thin fibers with widths of 10-20 nm were formed, which increased their length and thickness, attaining a width of >20 nm over several tens of minutes, probably owing to the lateral association of the fibers. Electrostatic and hydrophobic interactions play important roles in aggregation. These results provide a basis for understanding the fibrillation of short peptides.
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Affiliation(s)
- Moe Yamazaki
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Keisuke Ikeda
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Tomoshi Kameda
- Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan
| | - Hiroyuki Nakao
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Minoru Nakano
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
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19
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Bhagavatula H, Sarkar A, Santra B, Das A. Scan-Find-Scan-Model: Discrete Site-Targeted Suppressor Design Strategy for Amyloid-β. ACS Chem Neurosci 2022; 13:2191-2208. [PMID: 35767676 DOI: 10.1021/acschemneuro.2c00272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Alzheimer's disease is undoubtedly the most well-studied neurodegenerative disease. Consequently, the amyloid-β (Aβ) protein ranks at the top in terms of getting attention from the scientific community for structural property-based characterization. Even after decades of extensive research, there is existing volatility in terms of understanding and hence the effective tackling procedures against the disease that arises due to the lack of knowledge of both specific target- and site-specific drugs. Here, we develop a multidimensional approach based on the characterization of the common static-dynamic-thermodynamic trait of the monomeric protein, which efficiently identifies a small target sequence that contains an inherent tendency to misfold and consequently aggregate. The robustness of the identification of the target sequence comes with an abundance of a priori knowledge about the length and sequence of the target and hence guides toward effective designing of the target-specific drug with a very low probability of bottleneck and failure. Based on the target sequence information, we further identified a specific mutant that showed the maximum potential to act as a destabilizer of the monomeric protein as well as enormous success as an aggregation suppressor. We eventually tested the drug efficacy by estimating the extent of modulation of binding affinity existing within the fibrillar form of the Aβ protein due to a single-point mutation and hence provided a proof of concept of the entire protocol.
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Affiliation(s)
- Hasathi Bhagavatula
- Department of Biotechnology, Progressive Education Society's Modern College of Arts Science and Commerce, Shivajinagar, Pune 411005, India
| | - Archishman Sarkar
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja Subodh Chandra Mallick Road, Kolkata, West Bengal 700032, India
| | - Binit Santra
- Department of Chemistry, Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh 208016, India
| | - Atanu Das
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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20
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Mañas‐Torres MC, Illescas‐Lopez S, Gavira JA, de Cienfuegos LÁ, Marchesan S. Interactions Between Peptide Assemblies and Proteins for Medicine. Isr J Chem 2022. [DOI: 10.1002/ijch.202200018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mari C. Mañas‐Torres
- Departamento de Química Orgánica, Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ) Universidad de Granada, (UGR) C. U. Fuentenueva Avda. Severo Ochoa s/n E-18071 Granada
| | - Sara Illescas‐Lopez
- Departamento de Química Orgánica, Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ) Universidad de Granada, (UGR) C. U. Fuentenueva Avda. Severo Ochoa s/n E-18071 Granada
| | - José A. Gavira
- Laboratorio de Estudios Cristalográficos Instituto Andaluz de Ciencias de la Tierra (Consejo Superior de Investigaciones Científicas-UGR) Avenida de las Palmeras 4 18100 Armilla, UEQ Granada Spain
| | - Luis Álvarez de Cienfuegos
- Departamento de Química Orgánica, Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ) Universidad de Granada, (UGR) C. U. Fuentenueva Avda. Severo Ochoa s/n E-18071 Granada
- Instituto de Investigación Biosanitaria ibs Granada Spain
| | - Silvia Marchesan
- Chemical and Pharmaceutical Sciences Department University of Trieste Via L. Giorgieri 1 Trieste 34127 Italy
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21
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Sakaguchi N, Kaumbekova S, Itano R, Torkmahalleh MA, Shah D, Umezawa M. Changes in the Secondary Structure and Assembly of Proteins on Fluoride Ceramic (CeF 3) Nanoparticle Surfaces. ACS APPLIED BIO MATERIALS 2022; 5:2843-2850. [PMID: 35653551 PMCID: PMC9214759 DOI: 10.1021/acsabm.2c00239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fluoride nanoparticles (NPs) are materials utilized in the biomedical field for applications including imaging of the brain. Their interactions with biological systems and molecules are being investigated, but the mechanism underlying these interactions remains unclear. We focused on possible changes in the secondary structure and aggregation state of proteins on the surface of NPs and investigated the principle underlying the changes using the amyloid β peptide (Aβ16-20) based on infrared spectrometry. CeF3 NPs (diameter 80 nm) were synthesized via thermal decomposition. Infrared spectrometry showed that the presence of CeF3 NPs promotes the formation of the β-sheet structure of Aβ16-20. This phenomenon was attributed to the hydrophobic interaction between NPs and Aβ peptides in aqueous environments, which causes the Aβ peptides to approach each other on the NP surface and form ordered hydrogen bonds. Because of the coexisting salts on the secondary structure and assembly of Aβ peptides, the formation of the β-sheet structure of Aβ peptides on the NP surface was suppressed in the presence of NH4+ and NO3- ions, suggesting the possibility that Aβ peptides were adsorbed and bound to the NP surface. The formation of the β-sheet structure of Aβ peptides was promoted in the presence of NH4+, whereas it was suppressed in the presence of NO3- because of the electrostatic interaction between the lysine residue of the Aβ peptide and the ions. Our findings will contribute to comparative studies on the effect of different NPs with different physicochemical properties on the molecular state of proteins.
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Affiliation(s)
- Naoya Sakaguchi
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Samal Kaumbekova
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr 53, Nur-Sultan 010000, Kazakhstan
| | - Ryodai Itano
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
| | - Mehdi Amouei Torkmahalleh
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr 53, Nur-Sultan 010000, Kazakhstan
| | - Dhawal Shah
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr 53, Nur-Sultan 010000, Kazakhstan
| | - Masakazu Umezawa
- Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585, Japan
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22
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Sasidharan S, Ramakrishnan V. Aromatic interactions directing peptide nano-assembly. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2022; 130:119-160. [PMID: 35534106 DOI: 10.1016/bs.apcsb.2022.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Self-assembly is a process of spontaneous organization of molecules as a result of non-covalent interactions. Organized self-assembly at the nano level is emerging as a powerful tool in the bottom-up fabrication of functional nanostructures for targeted applications. Aromatic π-π stacking plays a significant role by facilitating the persistent supramolecular association of individual subunits to the self-assembled structures of high stability. Understanding, the supramolecular chemistry of the materials interacting through aromatic interactions, is of tremendous interest in not only constructing functional materials but also in revealing the mechanism of molecular assembly in living organisms. This chapter aims to focus on understanding the potential role of π-π interactions in directing and regulating the self-assembly of peptide nanostructures. The scope of the chapter starts with an outline of the history and mechanism of the aromatic π-π interactions. It progresses through the design strategy for the assembly of peptides containing aromatic rings, the conditions affecting the aromatic stacking interactions, their resulting nanoassemblies, properties, and applications. The properties and applications of the supramolecular materials formed through the aromatic stacking interactions are highlighted to provide an increased understanding of the role of weak interactions in the design and construction of novel functional materials.
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Affiliation(s)
- Sajitha Sasidharan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Vibin Ramakrishnan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India.
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23
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Criado-Gonzalez M, Espinosa-Cano E, Rojo L, Boulmedais F, Aguilar MR, Hernández R. Injectable Tripeptide/Polymer Nanoparticles Supramolecular Hydrogel: A Candidate for the Treatment of Inflammatory Pathologies. ACS APPLIED MATERIALS & INTERFACES 2022; 14:10068-10080. [PMID: 35179869 DOI: 10.1021/acsami.1c22993] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Supramolecular peptide-based hydrogels attract great attention in several fields, i.e., biomedicine, catalysis, energy, and materials chemistry, due to the noncovalent nature of the self-assembly and functional tunable properties defined by the amino acid sequence. In this work, we developed an injectable hybrid supramolecular hydrogel whose formation was triggered by electrostatic interactions between a phosphorylated tripeptide, Fmoc-FFpY (F: phenylalanine, pY: phosphorylated tyrosine), and cationic polymer nanoparticles made of vinylimidazole and ketoprofen (poly(HKT-co-VI) NPs). Hydrogel formation was assessed through inverted tube tests, and its fibrillary structure, around polymer NPs, was observed by transmission electron microscopy. Interestingly, peptide self-assembly yields the formation of nontwisted and twisted fibers, which could be attributed to β-sheets and α-helix structures, respectively, as characterized by circular dichroism and infrared spectroscopies. An increase of the elastic modulus of the Fmoc-FFpY/polymer NPs hybrid hydrogels was observed with peptide concentration as well as its injectability property, due to its shear thinning behavior and self-healing ability. After checking their stability under physiological conditions, the cytotoxicity properties of these hybrid hydrogels were evaluated in contact with human dermal fibroblasts (FBH) and murine macrophages (RAW 264.7). Finally, the Fmoc-FFpY/polymer NPs hybrid hydrogels exhibited a great nitric oxide reduction (∼67%) up to basal values of pro-inflammatory RAW 264.7 cells, thus confirming their excellent anti-inflammatory properties for the treatment of localized inflammatory pathologies.
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Affiliation(s)
- Miryam Criado-Gonzalez
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), c/ Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Eva Espinosa-Cano
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), c/ Juan de la Cierva, 3, 28006 Madrid, Spain
- CIBER-BBN, c/ Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain
| | - Luis Rojo
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), c/ Juan de la Cierva, 3, 28006 Madrid, Spain
- CIBER-BBN, c/ Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain
| | - Fouzia Boulmedais
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - María Rosa Aguilar
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), c/ Juan de la Cierva, 3, 28006 Madrid, Spain
- CIBER-BBN, c/ Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain
| | - Rebeca Hernández
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), c/ Juan de la Cierva, 3, 28006 Madrid, Spain
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24
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Zhang Q, Liu Y, Xie T, Shang-guan Y, Tian M, Zhang Q, Cao M. Sulfate ion-triggered self-assembly transitions of amphiphilic short peptides by force balance adjustment. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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25
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Ghosh G, Barman R, Mukherjee A, Ghosh U, Ghosh S, Fernández G. Control over Multiple Nano‐ and Secondary Structures in Peptide Self‐Assembly. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Goutam Ghosh
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Correnstrasse 36 48149 Münster Germany
| | - Ranajit Barman
- School of Applied and Interdisciplinary Sciences Indian Association for the Cultivation Science 2A and 2B Raja S. C. Mullick Road Kolkata India
| | - Anurag Mukherjee
- School of Applied and Interdisciplinary Sciences Indian Association for the Cultivation Science 2A and 2B Raja S. C. Mullick Road Kolkata India
| | - Uttam Ghosh
- Department of Organic Chemistry Indian Institute of Science Bengaluru 560012 Karnataka India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary Sciences Indian Association for the Cultivation Science 2A and 2B Raja S. C. Mullick Road Kolkata India
| | - Gustavo Fernández
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Correnstrasse 36 48149 Münster Germany
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26
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Ghosh G, Barman R, Mukherjee A, Ghosh U, Ghosh S, Fernández G. Control over Multiple Nano- and Secondary Structures in Peptide Self-Assembly. Angew Chem Int Ed Engl 2022; 61:e202113403. [PMID: 34758508 PMCID: PMC9300061 DOI: 10.1002/anie.202113403] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Indexed: 12/15/2022]
Abstract
Herein, we report the rich morphological and conformational versatility of a biologically active peptide (PEP-1), which follows diverse self-assembly pathways to form up to six distinct nanostructures and up to four different secondary structures through subtle modulation in pH, concentration and temperature. PEP-1 forms twisted β-sheet secondary structures and nanofibers at pH 7.4, which transform into fractal-like structures with strong β-sheet conformations at pH 13.0 or short disorganized elliptical aggregates at pH 5.5. Upon dilution at pH 7.4, the nanofibers with twisted β-sheet secondary structural elements convert into nanoparticles with random coil conformations. Interestingly, these two self-assembled states at pH 7.4 and room temperature are kinetically controlled and undergo a further transformation into thermodynamically stable states upon thermal annealing: whereas the twisted β-sheet structures and corresponding nanofibers transform into 2D sheets with well-defined β-sheet domains, the nanoparticles with random coil structures convert into short nanorods with α-helix conformations. Notably, PEP-1 also showed high biocompatibility, low hemolytic activity and marked antibacterial activity, rendering our system a promising candidate for multiple bio-applications.
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Affiliation(s)
- Goutam Ghosh
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrenstrasse 3648149MünsterGermany
| | - Ranajit Barman
- School of Applied and Interdisciplinary SciencesIndian Association for the Cultivation Science2A and 2B Raja S. C. Mullick RoadKolkataIndia
| | - Anurag Mukherjee
- School of Applied and Interdisciplinary SciencesIndian Association for the Cultivation Science2A and 2B Raja S. C. Mullick RoadKolkataIndia
| | - Uttam Ghosh
- Department of Organic ChemistryIndian Institute of ScienceBengaluru560012KarnatakaIndia
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary SciencesIndian Association for the Cultivation Science2A and 2B Raja S. C. Mullick RoadKolkataIndia
| | - Gustavo Fernández
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrenstrasse 3648149MünsterGermany
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Schiattarella C, Diaferia C, Gallo E, Della Ventura B, Morelli G, Vitagliano L, Velotta R, Accardo A. Solid-state optical properties of self-assembling amyloid-like peptides with different charged states at the terminal ends. Sci Rep 2022; 12:759. [PMID: 35031624 PMCID: PMC8760239 DOI: 10.1038/s41598-021-04394-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/12/2021] [Indexed: 12/20/2022] Open
Abstract
The self-assembling of small peptides not only leads to the formation of intriguing nanoarchitectures, but also generates materials with unexpected functional properties. Oligopeptides can form amyloid-like cross-β assemblies that are able to emit intrinsic photoluminescence (PL), over the whole near-UV/visible range, whose origin is still largely debated. As proton transfer between the peptide chain termini within the assembly is one of the invoked interpretations of this phenomenon, we here evaluated the solid state PL properties of a series of self-assembled hexaphenylalanine peptides characterized by a different terminal charge state. Overall, our data indicate that the charge state of these peptides has a marginal role in the PL emission as all systems exhibit very similar multicolour PL associated with a violation of the Kasha’s rule. On the other hand, charged/uncharged ends occasionally produce differences in the quantum yields. The generality of these observations has been proven by extending these analyses to the Aβ16–21 peptide. Collectively, the present findings provide useful information for deciphering the code that links the spectroscopic properties of these assemblies to their structural/electronic features.
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Affiliation(s)
- Chiara Schiattarella
- Institute of Applied Sciences and Intelligent Systems, CNR, Via P. Castellino 111, 80131, Naples, Italy
| | - Carlo Diaferia
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Mezzocannone 16, 80134, Naples, Italy
| | - Enrico Gallo
- IRCCS Synlab SDN, Via Gianturco 113, 80143, Naples, Italy
| | - Bartolomeo Della Ventura
- Department of Physics "Ettore Pancini", University of Naples "Federico II", Via Cintia 26, 80125, Naples, Italy
| | - Giancarlo Morelli
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Mezzocannone 16, 80134, Naples, Italy
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging (IBB), CNR, Via Mezzocannone 16, 80134, Naples, Italy
| | - Raffaele Velotta
- Department of Physics "Ettore Pancini", University of Naples "Federico II", Via Cintia 26, 80125, Naples, Italy.
| | - Antonella Accardo
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Mezzocannone 16, 80134, Naples, Italy.
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28
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Theodoroula NF, Karavasili C, Vlasiou MC, Primikyri A, Nicolaou C, Chatzikonstantinou AV, Chatzitaki AT, Petrou C, Bouropoulos N, Zacharis CK, Galatou E, Sarigiannis Y, Fatouros DG, Vizirianakis IS. NGIWY-Amide: A Bioinspired Ultrashort Self-Assembled Peptide Gelator for Local Drug Delivery Applications. Pharmaceutics 2022; 14:133. [PMID: 35057029 PMCID: PMC8778326 DOI: 10.3390/pharmaceutics14010133] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 01/14/2023] Open
Abstract
Fibrillar structures derived from plant or animal origin have long been a source of inspiration for the design of new biomaterials. The Asn-Gly-Ile-Trp-Tyr-NH2 (NGIWY-amide) pentapeptide, isolated from the sea cucumber Apostichopus japonicus, which spontaneously self-assembles in water to form hydrogel, pertains to this category. In this study, we evaluated this ultra-short cosmetic bioinspired peptide as vector for local drug delivery applications. Combining nuclear magnetic resonance, circular dichroism, infrared spectroscopy, X-ray diffraction, and rheological studies, the synthesized pentapeptide formed a stiff hydrogel with a high β-sheet content. Molecular dynamic simulations aligned well with scanning electron and atomic-force microscopy studies, revealing a highly filamentous structure with the fibers adopting a helical-twisted morphology. Model dye localization within the supramolecular hydrogel provided insights on the preferential distribution of hydrophobic and hydrophilic compounds in the hydrogel network. That was further depicted in the diffusion kinetics of drugs differing in their aqueous solubility and molecular weight, namely, doxorubicin hydrochloride, curcumin, and octreotide acetate, highlighting its versatility as a delivery vector of both hydrophobic and hydrophilic compounds of different molecular weight. Along with the observed cytocompatibility of the hydrogel, the NGIWY-amide pentapeptide may offer new approaches for cell growth, drug delivery, and 3D bioprinting tissue-engineering applications.
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Affiliation(s)
- Nikoleta F. Theodoroula
- Department of Molecular Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Christina Karavasili
- Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.K.); (A.-T.C.); (D.G.F.)
| | - Manos C. Vlasiou
- Department of Life & Health Sciences, University of Nicosia, Nicosia 2417, Cyprus; (M.C.V.); (C.N.); (C.P.); (E.G.)
| | | | - Christia Nicolaou
- Department of Life & Health Sciences, University of Nicosia, Nicosia 2417, Cyprus; (M.C.V.); (C.N.); (C.P.); (E.G.)
| | - Alexandra V. Chatzikonstantinou
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece;
| | - Aikaterini-Theodora Chatzitaki
- Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.K.); (A.-T.C.); (D.G.F.)
| | - Christos Petrou
- Department of Life & Health Sciences, University of Nicosia, Nicosia 2417, Cyprus; (M.C.V.); (C.N.); (C.P.); (E.G.)
| | - Nikolaos Bouropoulos
- Department of Materials Science, University of Patras, 26504 Patras, Greece;
- Foundation for Research and Technology Hellas, Institute of Chemical Engineering and High Temperature Chemical Processes, 26504 Patras, Greece
| | - Constantinos K. Zacharis
- Laboratory of Pharmaceutical Analysis, Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Eleftheria Galatou
- Department of Life & Health Sciences, University of Nicosia, Nicosia 2417, Cyprus; (M.C.V.); (C.N.); (C.P.); (E.G.)
| | - Yiannis Sarigiannis
- Department of Life & Health Sciences, University of Nicosia, Nicosia 2417, Cyprus; (M.C.V.); (C.N.); (C.P.); (E.G.)
| | - Dimitrios G. Fatouros
- Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.K.); (A.-T.C.); (D.G.F.)
| | - Ioannis S. Vizirianakis
- Department of Molecular Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Department of Life & Health Sciences, University of Nicosia, Nicosia 2417, Cyprus; (M.C.V.); (C.N.); (C.P.); (E.G.)
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Shen Y, Wang Y, Hamley IW, Qi W, Su R, He Z. Chiral self-assembly of peptides: Toward the design of supramolecular polymers with enhanced chemical and biological functions. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Warren JL, Dykeman-Bermingham PA, Knight AS. Controlling Amphiphilic Polymer Folding beyond the Primary Structure with Protein-Mimetic Di(Phenylalanine). J Am Chem Soc 2021; 143:13228-13234. [PMID: 34375094 PMCID: PMC9362848 DOI: 10.1021/jacs.1c05659] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
While methods for polymer synthesis have proliferated, their functionality pales in comparison to natural biopolymers-strategies are limited for building the intricate network of noncovalent interactions necessary to elicit complex, protein-like functions. Using a bioinspired di(phenylalanine) acrylamide (FF) monomer, we explored the impact of various noncovalent interactions in generating ordered assembled structures. Amphiphilic copolymers were synthesized that exhibit β-sheet-like local structure upon collapsing into single-chain assemblies in aqueous environments. Systematic analysis of a series of amphiphilic copolymers illustrated that the global collapse is primarily driven by hydrophobic forces. Hydrogen-bonding and aromatic interactions stabilize local structure, as β-sheet-like interactions were identified via circular dichroism and thioflavin T fluorescence. Similar analysis of phenylalanine (F) and alanine-phenylalanine acrylamide (AF) copolymers found that distancing the aromatic residue from the polymer backbone is sufficient to induce β-sheet-like local structure akin to the FF copolymers; however, the interactions between AF subunits are less stable than those formed by FF. Further, hydrogen-bond donating hydrophilic monomers disrupt internal structure formed by FF within collapsed assemblies. Collectively, these results illuminate design principles for the facile incorporation of multiple facets of protein-mimetic, higher-order structure within folded synthetic polymers.
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Affiliation(s)
- Jacqueline L Warren
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Peter A Dykeman-Bermingham
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Abigail S Knight
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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31
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The kinetics of islet amyloid polypeptide phase-separated system and hydrogel formation are critically influenced by macromolecular crowding. Biochem J 2021; 478:3025-3046. [PMID: 34313292 PMCID: PMC8370757 DOI: 10.1042/bcj20210384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/19/2021] [Accepted: 07/26/2021] [Indexed: 11/17/2022]
Abstract
Many protein misfolding diseases (e.g. type II diabetes and Alzheimer's disease) are characterised by amyloid deposition. Human islet amyloid polypeptide (hIAPP, involved in type II diabetes) spontaneously undergoes liquid-liquid phase separation (LLPS) and a kinetically complex hydrogelation, both catalysed by hydrophobic-hydrophilic interfaces (e.g. air-water interface and/or phospholipids-water interfaces). Gelation of hIAPP phase-separated liquid droplets initiates amyloid aggregation and the formation of clusters of interconnected aggregates, which grow and fuse to eventually percolate the whole system. Droplet maturation into irreversible hydrogels via amyloid aggregation is thought to be behind the pathology of several diseases. Biological fluids contain a high volume fraction of macromolecules, leading to macromolecular crowding. Despite crowding agent addition in in vitro studies playing a significant role in changing protein phase diagrams, the mechanism underlying enhanced LLPS, and the effect(s) on stages beyond LLPS remain poorly or not characterised.We investigated the effect of macromolecular crowding and increased viscosity on the kinetics of hIAPP hydrogelation using rheology and the evolution of the system beyond LLPS by microscopy. We demonstrate that increased viscosity exacerbated the kinetic variability of hydrogelation and of the phase separated-aggregated system, whereas macromolecular crowding abolished heterogeneity. Increased viscosity also strengthened the gel meshwork and accelerated aggregate cluster fusion. In contrast, crowding either delayed cluster fusion onset (dextran) or promoted it (Ficoll). Our study highlights that an in vivo crowded environment would critically influence amyloid stages beyond LLPS and pathogenesis.
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Li J, Zhu Y, Yu H, Dai B, Jun YS, Zhang F. Microbially Synthesized Polymeric Amyloid Fiber Promotes β-Nanocrystal Formation and Displays Gigapascal Tensile Strength. ACS NANO 2021; 15:11843-11853. [PMID: 34251182 DOI: 10.1021/acsnano.1c02944] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The ability of amyloid proteins to form stable β-sheet nanofibrils has made them potential candidates for material innovation in nanotechnology. However, such a nanoscale feature has rarely translated into attractive macroscopic properties for mechanically demanding applications. Here, we present a strategy by fusing amyloid peptides with flexible linkers from spidroin; the resulting polymeric amyloid proteins can be biosynthesized using engineered microbes and wet-spun into macroscopic fibers. Using this strategy, fibers from three different amyloid groups were fabricated. Structural analyses unveil the presence of β-nanocrystals that resemble the cross-β structure of amyloid nanofibrils. These polymeric amyloid fibers have displayed strong and molecular-weight-dependent mechanical properties. Fibers made of a protein polymer containing 128 repeats of the FGAILSS sequence displayed an average ultimate tensile strength of 0.98 ± 0.08 GPa and an average toughness of 161 ± 26 MJ/m3, surpassing most recombinant protein fibers and even some natural spider silk fibers. The design strategy and the biosynthetic approach can be expanded to create numerous functional materials, and the macroscopic amyloid fibers will enable a wide range of mechanically demanding applications.
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33
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Diaferia C, Rosa E, Gallo E, Smaldone G, Stornaiuolo M, Morelli G, Accardo A. Self-Supporting Hydrogels Based on Fmoc-Derivatized Cationic Hexapeptides for Potential Biomedical Applications. Biomedicines 2021; 9:biomedicines9060678. [PMID: 34203919 PMCID: PMC8232644 DOI: 10.3390/biomedicines9060678] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/11/2021] [Accepted: 06/12/2021] [Indexed: 11/16/2022] Open
Abstract
Peptide-based hydrogels (PHGs) are biocompatible materials suitable for biological, biomedical, and biotechnological applications, such as drug delivery and diagnostic tools for imaging. Recently, a novel class of synthetic hydrogel-forming amphiphilic cationic peptides (referred to as series K), containing an aliphatic region and a Lys residue, was proposed as a scaffold for bioprinting applications. Here, we report the synthesis of six analogues of the series K, in which the acetyl group at the N-terminus is replaced by aromatic portions, such as the Fmoc protecting group or the Fmoc-FF hydrogelator. The tendency of all peptides to self-assemble and to gel in aqueous solution was investigated using a set of biophysical techniques. The structural characterization pointed out that only the Fmoc-derivatives of series K keep their capability to gel. Among them, Fmoc-K3 hydrogel, which is the more rigid one (G’ = 2526 Pa), acts as potential material for tissue engineering, fully supporting cell adhesion, survival, and duplication. These results describe a gelification process, allowed only by the correct balancing among aggregation forces within the peptide sequences (e.g., van der Waals, hydrogen bonding, and π–π stacking).
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Affiliation(s)
- Carlo Diaferia
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, 80134 Naples, Italy; (C.D.); (E.R.); (M.S.); (G.M.)
| | - Elisabetta Rosa
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, 80134 Naples, Italy; (C.D.); (E.R.); (M.S.); (G.M.)
| | - Enrico Gallo
- IRCCS SDN, Via Gianturco 113, 80143 Naples, Italy; (E.G.); (G.S.)
| | | | - Mariano Stornaiuolo
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, 80134 Naples, Italy; (C.D.); (E.R.); (M.S.); (G.M.)
| | - Giancarlo Morelli
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, 80134 Naples, Italy; (C.D.); (E.R.); (M.S.); (G.M.)
| | - Antonella Accardo
- Department of Pharmacy and Research Centre on Bioactive Peptides (CIRPeB), University of Naples “Federico II”, 80134 Naples, Italy; (C.D.); (E.R.); (M.S.); (G.M.)
- Correspondence: ; Tel.: +39-081-2532045
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Warren JP, Miles DE, Kapur N, Wilcox RK, Beales PA. Hydrodynamic Mixing Tunes the Stiffness of Proteoglycan-Mimicking Physical Hydrogels. Adv Healthc Mater 2021; 10:e2001998. [PMID: 33943034 DOI: 10.1002/adhm.202001998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/23/2021] [Indexed: 11/09/2022]
Abstract
Self-assembling hydrogels are promising materials for regenerative medicine and tissue engineering. However, designing hydrogels that replicate the 3-4 order of magnitude variation in soft tissue mechanics remains a major challenge. Here hybrid hydrogels are investigated formed from short self-assembling β-fibril peptides, and the glycosaminoglycan chondroitin sulfate (CS), chosen to replicate physical aspects of proteoglycans, specifically natural aggrecan, which provides structural mechanics to soft tissues. Varying the peptide:CS compositional ratio (1:2, 1:10, or 1:20) can tune the mechanics of the gel by one to two orders of magnitude. In addition, it is demonstrated that at any fixed composition, the gel shear modulus can be tuned over approximately two orders of magnitude through varying the initial vortex mixing time. This tuneability arises due to changes in the mesoscale structure of the gel network (fibril width, length, and connectivity), giving rise to both shear-thickening and shear-thinning behavior. The resulting hydrogels range in shear elastic moduli from 0.14 to 220 kPa, mimicking the mechanical variability in a range of soft tissues. The high degree of discrete tuneability of composition and mechanics in these hydrogels makes them particularly promising for matching the chemical and mechanical requirements of different applications in tissue engineering and regenerative medicine.
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Affiliation(s)
- James P. Warren
- School of Chemistry University of Leeds Leeds LS2 9JT UK
- School of Mechanical Engineering University of Leeds Leeds LS2 9JT UK
- Institute of Medical and Biological Engineering University of Leeds Leeds LS2 9JT UK
| | - Danielle E. Miles
- School of Chemistry University of Leeds Leeds LS2 9JT UK
- School of Mechanical Engineering University of Leeds Leeds LS2 9JT UK
- Institute of Medical and Biological Engineering University of Leeds Leeds LS2 9JT UK
| | - Nikil Kapur
- School of Mechanical Engineering University of Leeds Leeds LS2 9JT UK
| | - Ruth K. Wilcox
- School of Mechanical Engineering University of Leeds Leeds LS2 9JT UK
- Institute of Medical and Biological Engineering University of Leeds Leeds LS2 9JT UK
| | - Paul A. Beales
- School of Chemistry University of Leeds Leeds LS2 9JT UK
- Astbury Centre for Structural Biology University of Leeds Leeds LS2 9JT UK
- Bragg Centre for Materials Research University of Leeds Leeds LS2 9JT UK
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35
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Misra S, Singh P, Mahata RN, Brandão P, Roy S, Mahapatra AK, Nanda J. Supramolecular Antiparallel β-Sheet Formation by Tetrapeptides Based on Amyloid Sequence. J Phys Chem B 2021; 125:4274-4285. [PMID: 33886330 DOI: 10.1021/acs.jpcb.0c10920] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Self-assembly of short peptides has emerged as an interesting research field for a wide range of applications. Recently, several truncated fragments of long-chain peptides or proteins responsible for different neurodegenerative diseases were studied to understand whether they can mimic the property and function of native peptides or not. It was reported that such a kind of peptide adopts a β-sheet structure in the disease state. It was observed that aromatic amino acid-rich peptide fragments possess a high tendency to adopt a β-sheet conformation. In this article, we are first time reporting the crystal structure of two tetrapeptides: Boc-GAII-OMe (Peptide 1) and Boc-GGVV-OMe (Peptide 2), composed of aliphatic amino acids, and the sequences are similar to the Aβ-peptide fragments Aβ29-32 and Aβ37-40 , respectively. In the solid-state, they are self-assembled in an antiparallel β-sheet fashion. The peptide units are connected by the strong amide hydrogen-bonding (N-H···O) interactions. Apart from that, other noncovalent interactions are also present, which help to stabilize the cross-β-sheet arrangement. Interestingly, in the crystal structure of Peptide 1, noncovalent C···C interaction between the electron-deficient carbonyl carbon, and the electron-rich sp3-carbon atom is observed, which is quite rare in the literature. The calculated torsion angles for these peptides are lying in the β-sheet region of the Ramachandran plot. FT-IR studies also indicate the formation of an antiparallel β-sheet structure in the solid-state. Circular dichroism of the peptides in the aqueous solution also suggests the presence of predominantly β-sheet-like conformation in the aqueous solution. Under cross-polarized light, Congo Red stained both peptides showed green-gold color due to birefringence indicating their amyloidogenic nature. This result indicates that the short peptide composed of aliphatic amino acid is capable of forming a β-sheet structure in the absence of aromatic amino acid and also can mimic the function of the native amyloid peptide.
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Affiliation(s)
- Souvik Misra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, P.O.-Botanic Garden, Howrah-711103, West Bengal, India
| | - Pijush Singh
- Department of Biochemistry and Biophysics. University of Kalyani, Kalyani, Nadia, West Bengal, India
| | - Rabindra Nath Mahata
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, P.O.-Botanic Garden, Howrah-711103, West Bengal, India
| | - Paula Brandão
- Departamento de Química/CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Subhasish Roy
- Department of Chemistry, BITS-Pilani K. K. Birla Goa Campus, 433 Sancoale, Goa 403726, India
| | - Ajit K Mahapatra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, P.O.-Botanic Garden, Howrah-711103, West Bengal, India
| | - Jayanta Nanda
- Department of Chemistry, University of North Bengal, Raja Rammohunpur, P.O.-NBU campus, Darjeeling-734013, West Bengal, India
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36
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Wang Z, Wang J, Sun Z, Xiang W, Shen C, Rui N, Ding M, Yuan Y, Cui H, Liu CJ. Electron-induced rapid crosslinking in supramolecular metal-peptide assembly and chemically responsive disaggregation for catalytic application. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63655-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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37
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Pyne P, Samanta N, Gohil H, Prabhu SS, Mitra RK. Alteration of water absorption in the THz region traces the onset of fibrillation in proteins. Chem Commun (Camb) 2021; 57:998-1001. [PMID: 33399590 DOI: 10.1039/d0cc06500e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using terahertz spectroscopy, we established the alteration of the collective hydration of water during the fibrillation process (native → intermediate → fibril) of a model protein bovine serum albumin. This label-free study concludes that water dynamics change systematically with protein conformational changes as it experiences a hydrophobic environment during the initial protein unfolding process, followed by the release of bound water during oligomerization and finally the hydrophobic interior of the fibril.
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Affiliation(s)
- Partha Pyne
- Department of Chemical, Biological & Macro-Molecular Sciences, Satyendra Nath Bose National Centre for Basic Sciences, Block-JD; Sector-III; Salt Lake, Kolkata-700106, India.
| | - Nirnay Samanta
- Department of Chemical, Biological & Macro-Molecular Sciences, Satyendra Nath Bose National Centre for Basic Sciences, Block-JD; Sector-III; Salt Lake, Kolkata-700106, India. and Institute for Physical and Theoretical Chemistry, TU Braunschweig, 38106 Braunschweig, Germany
| | - Himanshu Gohil
- Department of Condensed Matter Physics And Material Science, Tata Institute of Fundamental Research, Homi Bhahba Road, Colaba, Mumbai-400005, India.
| | - S S Prabhu
- Department of Condensed Matter Physics And Material Science, Tata Institute of Fundamental Research, Homi Bhahba Road, Colaba, Mumbai-400005, India.
| | - Rajib Kumar Mitra
- Department of Chemical, Biological & Macro-Molecular Sciences, Satyendra Nath Bose National Centre for Basic Sciences, Block-JD; Sector-III; Salt Lake, Kolkata-700106, India.
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38
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Criado-Gonzalez M, Wagner D, Iqbal MH, Ontani A, Carvalho A, Schmutz M, Schlenoff JB, Schaaf P, Jierry L, Boulmedais F. Supramolecular tripeptide self-assembly initiated at the surface of coacervates by polyelectrolyte exchange. J Colloid Interface Sci 2021; 588:580-588. [PMID: 33450601 DOI: 10.1016/j.jcis.2020.12.066] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 01/07/2023]
Abstract
Spatial control of supramolecular self-assembly can yield compartmentalized structures, a key feature for the design of artificial cells. Inducing self-assembly from and on compartments is still a challenge. Polyelectrolyte complex coacervates are simple model droplet systems able to reproduce the basic features of membrane-less organelles, appearing in cells. Here, we demonstrate the supramolecular self-assembly of a phosphorylated tripeptide, Fmoc-FFpY (Fmoc: fluorenyl-methoxycarbonyl; F: phenyl alanine, pY: phosphorylated tyrosine), on the surface of poly(l-glutamic acid)/poly(allylamine hydrochloride) (PGA/PAH) complex coacervate microdroplets. The phosphorylated peptides self-assemble, without dephosphorylation, through ion pairing between the phosphate groups of Fmoc-FFpY and the amine groups of PAH. This process provides spontaneous capsules formed by an amorphous polyelectrolyte complex core surrounded by a structured peptide/PAH shell. Similar fibrillar Fmoc-FFpY self-assembled structures are obtained at the interface between the peptide solution and a PGA/PAH polyelectrolyte multilayer, a complex coacervate in the thin film or "multilayer" format. In contact with the peptide solution, PAH chains diffuse out of the coacervate or multilayer film and complex with Fmoc-FFpY at the solution interface, exchanging any PGA with which they were associated. Self-assembly of Fmoc-FFpY, now concentrated by complexation with PAH, follows quickly.
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Affiliation(s)
- Miryam Criado-Gonzalez
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France; Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, "Biomatériaux et Bioingénierie", 1 rue Eugène Boeckel, 67000 Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, 7 rue Saint Elisabeth, 67000 Strasbourg, France
| | - Deborah Wagner
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Muhammad Haseeb Iqbal
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Aymeric Ontani
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Alain Carvalho
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Marc Schmutz
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Joseph B Schlenoff
- Florida State University, Department of Chemistry and Biochemistry, Tallahassee, 32306 FL, United States
| | - Pierre Schaaf
- Institut National de la Santé et de la Recherche Médicale, INSERM Unité 1121, "Biomatériaux et Bioingénierie", 1 rue Eugène Boeckel, 67000 Strasbourg, France; Université de Strasbourg, Faculté de Chirurgie Dentaire, 7 rue Saint Elisabeth, 67000 Strasbourg, France.
| | - Loïc Jierry
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
| | - Fouzia Boulmedais
- Université de Strasbourg, CNRS, Institut Charles Sadron (UPR 22), 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France.
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Pentlavalli S, Coulter S, Laverty G. Peptide Nanomaterials for Drug Delivery Applications. Curr Protein Pept Sci 2021; 21:401-412. [PMID: 31893991 DOI: 10.2174/1389203721666200101091834] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 10/04/2019] [Accepted: 10/21/2019] [Indexed: 11/22/2022]
Abstract
Self-assembled peptides have been shown to form well-defined nanostructures which display outstanding characteristics for many biomedical applications and especially in controlled drug delivery. Such biomaterials are becoming increasingly popular due to routine, standardized methods of synthesis, high biocompatibility, biodegradability and ease of upscale. Moreover, one can modify the structure at the molecular level to form various nanostructures with a wide range of applications in the field of medicine. Through environmental modifications such as changes in pH and ionic strength and the introduction of enzymes or light, it is possible to trigger self-assembly and design a host of different self-assembled nanostructures. The resulting nanostructures include nanotubes, nanofibers, hydrogels and nanovesicles which all display a diverse range of physico-chemical and mechanical properties. Depending on their design, peptide self-assembling nanostructures can be manufactured with improved biocompatibility and in vivo stability and the ability to encapsulate drugs with the capacity for sustained drug delivery. These molecules can act as carriers for drug molecules to ferry cargo intracellularly and respond to stimuli changes for both hydrophilic and hydrophobic drugs. This review explores the types of self-assembling nanostructures, the effects of external stimuli on and the mechanisms behind the assembly process, and applications for such technology in drug delivery.
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Affiliation(s)
- Sreekanth Pentlavalli
- Biofunctional Nanomaterials Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, Ireland
| | - Sophie Coulter
- Biofunctional Nanomaterials Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, Ireland
| | - Garry Laverty
- Biofunctional Nanomaterials Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, Ireland
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Wang C, Xiong M, Yang C, Yang D, Zheng J, Fan Y, Wang S, Gai Y, Lan X, Chen H, Zheng L, Huang K. PEGylated and Acylated Elabela Analogues Show Enhanced Receptor Binding, Prolonged Stability, and Remedy of Acute Kidney Injury. J Med Chem 2020; 63:16028-16042. [PMID: 33290073 DOI: 10.1021/acs.jmedchem.0c01913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Acute kidney injury (AKI), mostly caused by renal ischemia-reperfusion (I/R) injury and nephrotoxins, is characterized by rapid deterioration in renal-functions without effective drug treatment available. Through activation of a G protein-coupled receptor APJ, a furin-cleaved fragment of Elabela (ELA[22-32], E11), an endogenous APJ ligand, protects against renal I/R injury. However, the poor plasma stability and relatively weak APJ-binding ability of E11 limit its application. To address these issues, we rationally designed and synthesized a set of E11 analogues modified by palmitic acid (Pal) or polyethylene glycol; improved plasma stability and APJ-binding capacity of these analogues were achieved. In cultured renal tubular cells, these analogues protected against hypoxia-reperfusion or cisplatin-caused injury. For renal I/R-injured mice, these analogues showed improved reno-protective effects than E11; notably, Pal-E11 showed therapeutic effects at 24 h post I/R injury. These results present ELA analogues as potential therapeutic options in managing AKI.
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Affiliation(s)
- Chao Wang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Mingrui Xiong
- School of Pharmacy, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Chen Yang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Dong Yang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Jiaojiao Zheng
- School of Pharmacy, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Yu Fan
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Shun Wang
- Department of Blood Transfusion, Wuhan Hospital of Traditional and Western Medicine, Wuhan 430022, China
| | - Yongkang Gai
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Xiaoli Lan
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430022, China.,Hubei Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Hong Chen
- School of Pharmacy, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
| | - Ling Zheng
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Kun Huang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430030, China
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41
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Chen P, Ding F, Cai R, Javed I, Yang W, Zhang Z, Li Y, Davis TP, Ke PC, Chen C. Amyloidosis Inhibition, a New Frontier of the Protein Corona. NANO TODAY 2020; 35:100937. [PMID: 32728376 PMCID: PMC7388636 DOI: 10.1016/j.nantod.2020.100937] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The protein corona has served as a central dogma and a nuisance to the applications of nanomedicine and nanobiotechnology for well over a decade. Here we introduce the emerging field of amyloidosis inhibition, which aims to understand and harness the interfacial phenomena associated with a nanoparticle interacting with pathogenic amyloid proteins. Much of this interaction correlates with our understanding of the protein corona, and yet much differs, as elaborated for the first time in this Perspective. Specifically, we examine the in vitro, in silico and in vivo features of the new class of "amyloid protein corona", and discuss how the interactions with nanoparticles may halt the self-assembly of amyloid proteins. As amyloidosis is driven off pathway by the nanoparticles, the oligomeric and protofibrillar populations are suppressed to ameliorate their cytotoxicity. Furthermore, as amyloid proteins spread via the transport of bodily fluids or cross seeding, amyloidosis is inherently associated with dynamic proteins and ligands to evoke the immune system. Accordingly, we ponder the structural and medical implications of the amyloid protein corona in the presence of their stimulated cytokines. Understanding and exploiting the amyloid protein corona may facilitate the development of new theranostics against a range of debilitating amyloid diseases.
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Affiliation(s)
- Pengyu Chen
- Materials Research and Education Center, Auburn University, Auburn, AL 36849, United States
| | - Feng Ding
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, United States
| | - Rong Cai
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
- Research Unit of Nanoscience and Technology, Chinese Academy of Medical Sciences, Beijing 100039, China
| | - Ibrahim Javed
- ARC Center of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Wen Yang
- Materials Research and Education Center, Auburn University, Auburn, AL 36849, United States
| | - Zhenzhen Zhang
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, United States
| | - Yuhuan Li
- ARC Center of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Zhongshan Hospital, Fudan University, 111 Yixueyuan Rd, Xuhui District, Shanghai, China
| | - Thomas P. Davis
- ARC Center of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Qld 4072, Australia
| | - Pu Chun Ke
- ARC Center of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Zhongshan Hospital, Fudan University, 111 Yixueyuan Rd, Xuhui District, Shanghai, China
| | - Chunying Chen
- CAS Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
- Research Unit of Nanoscience and Technology, Chinese Academy of Medical Sciences, Beijing 100039, China
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Belwal VK, Chaudhary N. Amyloids and their untapped potential as hydrogelators. SOFT MATTER 2020; 16:10013-10028. [PMID: 33146652 DOI: 10.1039/d0sm01578d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amyloid fibrils are cross-β-sheet-rich fibrous aggregates. They were originally identified as disease-associated protein/peptide deposits. The cross-β motif was consequently labelled as an alien and pathogenic fold. Subsequent research revealed that the fibrillar aggregates were benign, and the cytotoxicity in the amyloid diseases was attributed to the pre-fibrillar structures. Research in the past two decades has identified the native functional amyloids in organisms ranging from bacteria to human. The amyloid-like fibrils, therefore, are not necessarily pathogenic, and the cross-β motif is very much native. This premise makes way for the amyloids to be used as biocompatible materials. Many naturally occurring amyloidogenic proteins/peptides or their fragments have been reported in the literature to form hydrogels. Hydrogels constitute one of the most interesting classes of soft materials that find application in diverse fields such as environmental, electronic, and biomedical engineering. Applications of hydrogels in medicine are particularly extensive. Among various classes of peptides that form hydrogels, the potential of amyloids is largely untapped. In this review, we have attempted to compile the literature on amyloid hydrogels and discuss their potential applications.
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Affiliation(s)
- Vinay Kumar Belwal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati - 781 039, India.
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He C, Wu S, Liu D, Chi C, Zhang W, Ma M, Lai L, Dong S. Glycopeptide Self-Assembly Modulated by Glycan Stereochemistry through Glycan–Aromatic Interactions. J Am Chem Soc 2020; 142:17015-17023. [DOI: 10.1021/jacs.0c06360] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Patrulea V, Borchard G, Jordan O. An Update on Antimicrobial Peptides (AMPs) and Their Delivery Strategies for Wound Infections. Pharmaceutics 2020; 12:E840. [PMID: 32887353 PMCID: PMC7560145 DOI: 10.3390/pharmaceutics12090840] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/22/2020] [Accepted: 08/28/2020] [Indexed: 12/13/2022] Open
Abstract
Bacterial infections occur when wound healing fails to reach the final stage of healing, which is usually hindered by the presence of different pathogens. Different topical antimicrobial agents are used to inhibit bacterial growth due to antibiotic failure in reaching the infected site, which is accompanied very often by increased drug resistance and other side effects. In this review, we focus on antimicrobial peptides (AMPs), especially those with a high potential of efficacy against multidrug-resistant and biofilm-forming bacteria and fungi present in wound infections. Currently, different AMPs undergo preclinical and clinical phase to combat infection-related diseases. AMP dendrimers (AMPDs) have been mentioned as potent microbial agents. Various AMP delivery strategies that are used to combat infection and modulate the healing rate-such as polymers, scaffolds, films and wound dressings, and organic and inorganic nanoparticles-have been discussed as well. New technologies such as Clustered Regularly Interspaced Short Palindromic Repeat (CRISPR)-associated protein (CRISPR-Cas) are taken into consideration as potential future tools for AMP delivery in skin therapy.
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Affiliation(s)
- Viorica Patrulea
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, 1211 Geneva, Switzerland;
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, 1211 Geneva, Switzerland
| | - Gerrit Borchard
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, 1211 Geneva, Switzerland;
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, 1211 Geneva, Switzerland
| | - Olivier Jordan
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1 Rue Michel Servet, 1211 Geneva, Switzerland;
- Section of Pharmaceutical Sciences, University of Geneva, 1 Rue Michel Servet, 1211 Geneva, Switzerland
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Ke PC, Zhou R, Serpell LC, Riek R, Knowles TPJ, Lashuel HA, Gazit E, Hamley IW, Davis TP, Fändrich M, Otzen DE, Chapman MR, Dobson CM, Eisenberg DS, Mezzenga R. Half a century of amyloids: past, present and future. Chem Soc Rev 2020; 49:5473-5509. [PMID: 32632432 PMCID: PMC7445747 DOI: 10.1039/c9cs00199a] [Citation(s) in RCA: 298] [Impact Index Per Article: 74.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Amyloid diseases are global epidemics with profound health, social and economic implications and yet remain without a cure. This dire situation calls for research into the origin and pathological manifestations of amyloidosis to stimulate continued development of new therapeutics. In basic science and engineering, the cross-β architecture has been a constant thread underlying the structural characteristics of pathological and functional amyloids, and realizing that amyloid structures can be both pathological and functional in nature has fuelled innovations in artificial amyloids, whose use today ranges from water purification to 3D printing. At the conclusion of a half century since Eanes and Glenner's seminal study of amyloids in humans, this review commemorates the occasion by documenting the major milestones in amyloid research to date, from the perspectives of structural biology, biophysics, medicine, microbiology, engineering and nanotechnology. We also discuss new challenges and opportunities to drive this interdisciplinary field moving forward.
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Affiliation(s)
- Pu Chun Ke
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Zhongshan Hospital, Fudan University, 111 Yixueyuan Rd, Xuhui District, Shanghai, China
| | - Ruhong Zhou
- Institute of Quantitative Biology, Zhejiang University, Hangzhou 310058, China; Department of Chemistry, Columbia University, New York, New York, 10027, USA
| | - Louise C. Serpell
- School of Life Sciences, University of Sussex, Falmer, East Sussex BN1 9QG, UK
| | - Roland Riek
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Wolfgang-Pauli-Str. 10, 8093 Zurich, Switzerland
| | - Tuomas P. J. Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
- Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, CB3 0HE, Cambridge, UK
| | - Hilal A. Lashuel
- Laboratory of Molecular Neurobiology and Neuroproteomics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences; Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, 69978 Tel Aviv, Israel
| | - Ian W. Hamley
- School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Whiteknights, Reading RG6 6AD, UK
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane Qld 4072, Australia
| | - Marcus Fändrich
- Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany
| | - Daniel Erik Otzen
- Department of Molecular Biology, Center for Insoluble Protein Structures (inSPIN), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Matthew R. Chapman
- Department of Molecular, Cellular and Developmental Biology, Centre for Microbial Research, University of Michigan, Ann Arbor, MI 48109-1048, USA
| | - Christopher M. Dobson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - David S. Eisenberg
- Departments of Chemistry and Biochemistry and Biological Chemistry, UCLA-DOE Institute and Howard Hughes Medical Institute, UCLA, Los Angeles, CA, USA
| | - Raffaele Mezzenga
- Department of Health Science & Technology, ETH Zurich, Schmelzbergstrasse 9, LFO, E23, 8092 Zurich, Switzerland
- Department of Materials, ETH Zurich, Wolfgang Pauli Strasse 10, 8093 Zurich, Switzerland
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Kumar S, Binder WH. Peptide-induced RAFT polymerization via an amyloid-β 17-20-based chain transfer agent. SOFT MATTER 2020; 16:6964-6968. [PMID: 32717010 DOI: 10.1039/d0sm01169j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We here describe the synthesis of a novel peptide/polymer-conjugate, embedding the amyloid-β (Aβ) protein core sequence Leu-Val-Phe-Phe (LVFF, Aβ17-20) via RAFT polymerization. Based on a novel chain transfer-agent, the "grafting-from" approach effectively generates the well-defined peptide-polymer conjugates with appreciably high monomer conversion rate, resulting in mechanically stiffer peptide-functional cross-linked polymeric hydrogels.
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Affiliation(s)
- Sonu Kumar
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, Halle (Saale) D-06120, Germany. and Department of Applied Sciences (Chemistry), Punjab Engineering College (Deemed to be University), Sector 12, Chandigarh, 160012, India
| | - Wolfgang H Binder
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, Halle (Saale) D-06120, Germany.
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Diaferia C, Netti F, Ghosh M, Sibillano T, Giannini C, Morelli G, Adler-Abramovich L, Accardo A. Bi-functional peptide-based 3D hydrogel-scaffolds. SOFT MATTER 2020; 16:7006-7017. [PMID: 32638818 DOI: 10.1039/d0sm00825g] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Over the last few years, hydrogels have been proposed for many biomedical applications, including drug delivery systems and scaffolds for tissue engineering. In particular, peptides have been envisioned as excellent candidates for the development of hydrogel materials, due to their intrinsic biocompatibility, ease of handling, and intrinsic biodegradability. Recently, we developed a novel hybrid polymer-peptide conjugate, PEG8-(FY)3, which is able to self-assemble into a self-supporting soft hydrogel over dry and wet surfaces as demonstrated by molecular dynamics simulation. Here, we describe the synthesis and supramolecular organization of six novel hexapeptides rationally designed by punctual chemical modification of the primary peptide sequence of the ancestor peptide (FY)3. Non-coded amino acids were incorporated by replacing the phenylalanine residue with naphthylalanine (Nal) and tyrosine with dopamine (Dopa). We also studied the effect of the modification of the side chain and the corresponding PEGylated peptide analogues, on the structural and mechanical properties of the hydrogel. Secondary structure, morphology and rheological properties of all the peptide-based materials were assessed by various biophysical tools. The in vitro biocompatibility of the supramolecular nanostructures was also evaluated on fibroblast cell lines. We conclude that the PEG8-(Nal-Dopa)3 hydrogel possesses the right properties to serve as a scaffold and support cell growth.
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Affiliation(s)
- Carlo Diaferia
- Department of Pharmacy, Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Mezzocannone 16, 80134-Naples, Italy.
| | - Francesca Netti
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, and the Center for Nanoscience and Nanotechnology Tel-Aviv University, 69978, Israel.
| | - Moumita Ghosh
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, and the Center for Nanoscience and Nanotechnology Tel-Aviv University, 69978, Israel.
| | - Teresa Sibillano
- Institute of Crystallography (IC), CNR, Via Amendola 122, 70126 Bari, Italy
| | - Cinzia Giannini
- Institute of Crystallography (IC), CNR, Via Amendola 122, 70126 Bari, Italy
| | - Giancarlo Morelli
- Department of Pharmacy, Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Mezzocannone 16, 80134-Naples, Italy.
| | - Lihi Adler-Abramovich
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, and the Center for Nanoscience and Nanotechnology Tel-Aviv University, 69978, Israel.
| | - Antonella Accardo
- Department of Pharmacy, Research Centre on Bioactive Peptides (CIRPeB), University of Naples "Federico II", Via Mezzocannone 16, 80134-Naples, Italy.
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Pandey G, Morla S, Kumar S, Ramakrishnan V. Modulating Aβ Fibrillogenesis with 'Trojan' peptides. Neuropeptides 2020; 81:102030. [PMID: 32156470 DOI: 10.1016/j.npep.2020.102030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/29/2020] [Accepted: 02/16/2020] [Indexed: 11/23/2022]
Abstract
Abnormal aggregation of beta-amyloid (Aβ) peptide into amyloid plaques in the brain has been identified as one of the key factors in instigating AD pathogenesis. Inhibition of Aβ aggregation can be an important therapeutic strategy in disease management. In this work, we demonstrate the application of structure-based design of short peptides ('trojan peptides'), intended to intervene in the aggregation of the core recognition domain of amyloid-beta peptide, a known malefactor in Alzheimer's disease. The modulatory effect of trojan peptides has been assessed using ThT fluorescence assay, FETEM imaging, IR, and toxicity assays on model neuronal cell lines. Experimental results suggest that designed trojan peptides could impede the aggregation of the core amyloid fibril forming segment of Aβ peptide, arrest the formation of toxic fibrillar assemblies, and reduce cytotoxicity of the neuronal cell lines.
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Affiliation(s)
- Gaurav Pandey
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, -781039, India
| | - Sudhir Morla
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, -781039, India
| | - Sachin Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, -781039, India
| | - Vibin Ramakrishnan
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, -781039, India.
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Mello LR, Hamley IW, Castelletto V, Garcia BBM, Lourenço TC, Vassiliades SV, Alves WA, Han SW, Silva ER. Self-assembly and intracellular delivery of DNA by a truncated fragment derived from the Trojan peptide Penetratin. SOFT MATTER 2020; 16:4746-4755. [PMID: 32329496 DOI: 10.1039/d0sm00347f] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Penetratin is a short Trojan peptide that attracts great interest in biomedical research for its capacity to translocate biological membranes. Herein, we study in detail both self-assembly and intracellular delivery of DNA by the heptamer KIWFQNR, a truncated peptide derived from Penetratin. This shortened sequence possesses a unique design with bolaamphiphilic characteristics that preserves the longest noncationic amino acid portion found in Penetratin. These features convey amphipathicity to assist self-assembly and make it a suitable model for exploring the role of hydrophobic residues for peptide interaction and cell uptake. We show that the fragment forms peptiplexes (i.e., peptide-DNA complexes), and aggregates into long nanofibers with clear β-sheet signature. The supramolecular structure of nanofibers is likely composed of DNA cores surrounded by a peptide shell to which the double helix behaves as a template and induces fibrillization. A nucleation and growth mechanism proceeding through liquid-liquid phase separation of coacervates is proposed for describing the self-assembly of peptiplexes. We also demonstrate that peptiplexes deliver double-stranded 200 bp DNA into HeLa cells, indicating its potential for preparing non-viral vectors for oligonucleotides through noncovalent strategies. Since the main structural features of native Penetratin are conserved in this simpler fragment, our findings also highlight the role of uncharged amino acids for structuration, and thus for the ability of Penetratin to cross cell membranes.
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Affiliation(s)
- Lucas R Mello
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04023-062, Brazil.
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Kelly SH, Wu Y, Varadhan AK, Curvino EJ, Chong AS, Collier JH. Enabling sublingual peptide immunization with molecular self-assemblies. Biomaterials 2020; 241:119903. [PMID: 32143059 PMCID: PMC7171596 DOI: 10.1016/j.biomaterials.2020.119903] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/16/2020] [Indexed: 12/13/2022]
Abstract
Short peptides are poorly immunogenic when delivered sublingually - under the tongue. Nanomaterial delivery of peptides could be utilized to improve immunogenicity towards designed sublingual vaccines, but nanomaterials have not been widely successful in sublingual vaccines owing to the challenges of transport through the sublingual mucosa. Here, we report that the sublingual immunogenicity of peptides is negligible, even in the presence of sublingual adjuvants or when PEGylated, but can be dramatically enhanced by assembly into supramolecular polymer-peptide nanofibers bearing low-molecular weight PEG, optimally between 2000 and 3000 Da. Neither PEGylation nor a sublingual adjuvant were capable of rendering peptides immunogenic without assembly into nanofibers. We found that PEG decreased nanofiber interactions with mucin and promoted longer residence time at the sublingual immunization site. Parallel investigations with shortened nanofibers indicated that the size of the assemblies had a surprisingly negligible influence over sublingual immunogenicity. In mice, optimized formulations were capable of raising strong and highly durable systemic antibody responses, antibodies in the upper respiratory and reproductive tracts, and systemic antigen-specific T-cell responses. These nanofiber-based sublingual vaccines were effective with both protein and nucleotide adjuvants and raised responses against both a model peptide epitope and a peptide epitope from M. tuberculosis. Further, PASylation (modification of nanofibers with peptide sequences rich in Pro, Ala, and Ser) could be substituted for PEGylation to also achieve sublingual immunogenicity. These findings indicated that surface properties supersede nanomaterial size in modulating sublingual nanomaterial immunogenicity, having important implications for the design of synthetic sublingual vaccines.
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Affiliation(s)
- Sean H Kelly
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Yaoying Wu
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Ajay K Varadhan
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Elizabeth J Curvino
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States
| | - Anita S Chong
- Department of Surgery, The University of Chicago, Chicago, IL 60637, United States
| | - Joel H Collier
- Biomedical Engineering Department, Duke University, Durham, NC, 27708, United States.
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