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Khedri M, Moraveji MK. Microfluidic Engineering of RGD
[1]
‐Terminated Nanocarriers Micellization and In‐Situ Docetaxel Encapsulation: An Atomistic Insight. ChemistrySelect 2022. [DOI: 10.1002/slct.202103597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohammad Khedri
- Department of Chemical Engineering Amirkabir University of Technology (Tehran Polytechnic) c No. 350, Hafez Ave, Valiasr Square 15916-34311 Tehran Iran
| | - Mostafa keshavarz Moraveji
- Department of Chemical Engineering Amirkabir University of Technology (Tehran Polytechnic) c No. 350, Hafez Ave, Valiasr Square 15916-34311 Tehran Iran
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2
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Biomolecular engineering of drugs loading in Riboflavin-targeted polymeric devices: simulation and experimental. Sci Rep 2022; 12:5119. [PMID: 35332259 PMCID: PMC8948184 DOI: 10.1038/s41598-022-09164-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 03/16/2022] [Indexed: 11/09/2022] Open
Abstract
The synthesis of polymeric nanoparticles (NPs) with efficient drug loading content and targeting moieties is an attractive field and remains a challenge in drug delivery systems. Atomistic investigations can provide an in-depth understanding of delivery devices and reduce the number of expensive experiments. In this paper, we studied the self-assembly of poly (lactic-co-glycolic acid)-b-poly (ethylene glycol) with different molecular weights and surface compositions. The innovation of this molecular study is the loading of an antitumor drug (docetaxel) on a targeting ligand (riboflavin). According to this work, a novel, biocompatible and targeted system for cancer treatment has been developed. The obtained results revealed a correlation between polymer molecular weight and the stability of particles. In this line, samples including 20 and 10 w/w% moiety NPs formed from polymers with 3 and 4.5 kDa backbone sizes, respectively, are the stable models with the highest drug loading and entrapment efficiencies. Next, we evaluated NP morphology and found that NPs have a core/shell structure consisting of a hydrophobic core with a shell of poly (ethylene glycol) and riboflavin. Interestingly, morphology assessments confirmed that the targeting moiety located on the surface can improve drug delivery to receptors and cancerous cells. The developed models provided significant insight into the structure and morphology of NPs before the synthesis and further analysis of NPs in biological environments. However, in the best cases of this system, Dynamic Light Scattering (DLS) tests were also taken and the results were consistent with the results obtained from All Atom and Coarse Grained simulations.
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An injectable self-assembling hydrogel based on RGD peptidomimetic β-sheets as multifunctional biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 133:112633. [PMID: 35527136 DOI: 10.1016/j.msec.2021.112633] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/09/2021] [Accepted: 12/20/2021] [Indexed: 12/23/2022]
Abstract
Ability of the cells to adhere to an extracellular material is central to successful tissue genesis. Arg-Gly-Asp (RGD) sequences found in extracellular matrix proteins are well known for cell adhesion, however, enzymatic degradation and lack of specificity have limited their widespread use. Besides, a multifunctional material with inherent antimicrobial ability would help in invigorating the practical tissue engineering applications. Here, we report novel modified RGD (MR) and RGD mimic [R(K)] peptides (MOH and MNH2) which were synthesized post-in-silico screening, based on their interactions with integrin protein αVβ3 using HEX 8.0 docking server. These mimics, containing hydrophobic Phe-Phe (FF) moiety which has been specifically introduced to initiate the self-assembling process of β-sheet structures, were characterized thoroughly using various physicochemical and spectroscopic techniques. Under physiological conditions, these mimetics displayed thixotropic behavior rendering them highly suitable as injectable hydrogels having an added advantage of site-specific targeting abilities. Electron microscopy further revealed the formation of nanofibers upon self-assembly of these peptides. Besides, enhanced cell adhesiveness by these peptides compared to the commercial Poly l-lysine coated surfaces as well as the inherent antimicrobial potential against both sensitive and antibiotic-resistant pathogens (Methicillin-resistant Staphylococcus aureus and multi-drug resistant Salmonella enteritidis) substantiated the applicability of these unique injectable hydrogels wherein the porous fibrous framework offered a favorable environment for drug entrapment and 3D cell culture. Altogether, these properties render these novel RGD mimic peptides as promising multifunctional candidates for various tissue regenerative applications.
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Rezvantalab S, Maleki R, Drude NI, Khedri M, Jans A, Keshavarz Moraveji M, Darguzyte M, Ghasemy E, Tayebi L, Kiessling F. Experimental and Computational Study on the Microfluidic Control of Micellar Nanocarrier Properties. ACS OMEGA 2021; 6:23117-23128. [PMID: 34549113 PMCID: PMC8444197 DOI: 10.1021/acsomega.1c02651] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Microfluidic-based synthesis is a powerful technique to prepare well-defined homogenous nanoparticles (NPs). However, the mechanisms defining NP properties, especially size evolution in a microchannel, are not fully understood. Herein, microfluidic and bulk syntheses of riboflavin (RF)-targeted poly(lactic-co-glycolic acid)-poly(ethylene glycol) (PLGA-PEG-RF) micelles were evaluated experimentally and computationally. Using molecular dynamics (MD), a conventional "random" model for bulk self-assembly of PLGA-PEG-RF was simulated and a conceptual "interface" mechanism was proposed for the microfluidic self-assembly at an atomic scale. The simulation results were in agreement with the observed experimental outcomes. NPs produced by microfluidics were smaller than those prepared by the bulk method. The computational approach suggested that the size-determining factor in microfluidics is the boundary of solvents in the entrance region of the microchannel, explaining the size difference between the two experimental methods. Therefore, this computational approach can be a powerful tool to gain a deeper understanding and optimize NP synthesis.
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Affiliation(s)
- Sima Rezvantalab
- Department
of Chemical Engineering, Urmia University
of Technology, 57166-93188 Urmia, Iran
- Institute
for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, 52074 Aachen, Germany
| | - Reza Maleki
- Computational
Biology and Chemistry Group (CBCG), Universal
Scientific Education and Research Network (USERN), Tehran 1449614535 Iran
| | - Natascha Ingrid Drude
- Institute
for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, 52074 Aachen, Germany
- Department
of Experimental Neurology, Charité
−Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Mohammad Khedri
- Computational
Biology and Chemistry Group (CBCG), Universal
Scientific Education and Research Network (USERN), Tehran 1449614535 Iran
- Department
of Chemical Engineering, Amirkabir University
of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran 1591634311, Iran
| | - Alexander Jans
- DWI-Leibniz
Institute for Interactive Materials, Forckenbeckstr. 50, 52074 Aachen, Germany
| | - Mostafa Keshavarz Moraveji
- Department
of Chemical Engineering, Amirkabir University
of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran 1591634311, Iran
| | - Milita Darguzyte
- Institute
for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, 52074 Aachen, Germany
| | - Ebrahim Ghasemy
- Centre
Énergie Matériaux Télécommunications, Institut national de la recherché, 1650 Boul. Lionel-Boulet, Varennes, Quebec J3X 1S2, Canada
| | - Lobat Tayebi
- School
of Dentistry, Marquette University, Milwaukee, Wisconsin 53233, United States
| | - Fabian Kiessling
- Institute
for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen International University, 52074 Aachen, Germany
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Askari Rizvi SF, Zhang H. Emerging trends of receptor-mediated tumor targeting peptides: A review with perspective from molecular imaging modalities. Eur J Med Chem 2021; 221:113538. [PMID: 34022717 DOI: 10.1016/j.ejmech.2021.113538] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 01/10/2023]
Abstract
Natural peptides extracted from natural components such are known to have a relatively short in-vivo half-life and can readily metabolize by endo- and exo-peptidases. Fortunately, synthetic peptides can be easily manipulated to increase in-vivo stability, membrane permeability and target specificity with some well-known natural families. Many natural as well as synthetic peptides target to their endogenous receptors for diagnosis and therapeutic applications. In order to detect these peptides externally, they must be modified with radionuclides compatible with single photon emission computed tomography (SPECT) or positron emission tomography (PET). Although, these techniques mainly rely on physiological changes and have profound diagnostic strength over anatomical modalities such as MRI and CT. However, both SPECT and PET observed to possess lack of anatomical reference frame which is a key weakness of these techniques, and unfortunately, cannot be available freely in most clinical centres especially in under-developing countries. Hence, it is need of the time to design and develop economic, patient friendly and versatile strategies to grapple with existing problems without any hazardous side effects. Optical molecular imaging (OMI) has emerged as a novel technique in field of medical science using fluorescent probes as imaging modality and has ability to couple with organic drugs, small molecules, chemotherapeutics, DNA, RNA, anticancer peptide and protein without adding chelators as necessary for radionuclides. Furthermore, this review focuses on difference in imaging modalities and provides ample knowledge about reliable, economic and patient friendly optical imaging technique rather radionuclide-based imaging techniques.
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Affiliation(s)
- Syed Faheem Askari Rizvi
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 730000, Gansu, PR China
| | - Haixia Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 730000, Gansu, PR China.
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6
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Banger A, Sindram J, Otten M, Kania J, Wilms D, Strzelczyk A, Miletic S, Marlovits TC, Karg M, Hartmann L. Synthesis and self-assembly of amphiphilic precision glycomacromolecules. Polym Chem 2021. [DOI: 10.1039/d1py00422k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Amphiphilic precision glycomacromolecules (APG) are synthesized using solid-phase synthesis and studied for their self-assembly behavior and as inhibitors of bacterial adhesion.
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Affiliation(s)
- Alexander Banger
- Institute of Organic and Macromolecular Chemistry, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Julian Sindram
- Insitute of Physical Chemistry I: Colloids and Nanooptics, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Marius Otten
- Insitute of Physical Chemistry I: Colloids and Nanooptics, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Jessica Kania
- Institute of Organic and Macromolecular Chemistry, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Dimitri Wilms
- Institute of Organic and Macromolecular Chemistry, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Alexander Strzelczyk
- Institute of Organic and Macromolecular Chemistry, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Sean Miletic
- University Medical Center Hamburg-Eppendorf (UKE), Institute of Structural and Systems Biology, Hamburg, Germany
- Centre for Structural Systems Biology (CSSB), Hamburg, Germany
- Deutsches Elektronen-Synchrotron Zentrum (DESY), Hamburg, Germany
| | - Thomas C. Marlovits
- University Medical Center Hamburg-Eppendorf (UKE), Institute of Structural and Systems Biology, Hamburg, Germany
- Centre for Structural Systems Biology (CSSB), Hamburg, Germany
- Deutsches Elektronen-Synchrotron Zentrum (DESY), Hamburg, Germany
| | - Matthias Karg
- Insitute of Physical Chemistry I: Colloids and Nanooptics, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Laura Hartmann
- Institute of Organic and Macromolecular Chemistry, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
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7
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Liu S, Li H, Zhang J, Tian X, Li X. A biocompatible supramolecular hydrogel with multivalent galactose ligands inhibiting Pseudomonas aeruginosa virulence and growth. RSC Adv 2020; 10:33642-33650. [PMID: 35519035 PMCID: PMC9056750 DOI: 10.1039/d0ra06718k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 08/29/2020] [Indexed: 01/14/2023] Open
Abstract
In recent years, peptide self-assembly proved to be an efficient strategy to create complex structures or functional materials with nanoscale precision. In this work, we designed and synthesized a novel glycopeptide molecule with a galactose moiety through peptide galactosylation. Then relying on peptide self-assembling strategies, we created a supramolecular hydrogel with multivalent galactose ligands on the surface of self-assembled nanofibers for molecular recognition and interactions. Because of multivalent galactose-LecA interactions, the self-assemblies of glycopeptide could target P. aeruginosa specifically, and acted as anti-virulence and antibacterial agents to inhibit biofilm formation and bacterial growth of P. aeruginosa. Moreover, in association with polymyxin B, a common antibiotic, the glycopeptide hydrogel exhibited a synergistic growth inhibition effect on biofilm colonization of P. aeruginosa.
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Affiliation(s)
- Shengnan Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
| | - Hang Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
| | - Jikun Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
| | - Xin Tian
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University Suzhou 215123 China
| | - Xinming Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
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Rezvantalab S, Keshavarz Moraveji M, Khedri M, Maleki R. An insight into the role of riboflavin ligand in the self-assembly of poly(lactic-co-glycolic acid)-based nanoparticles - a molecular simulation and experimental approach. SOFT MATTER 2020; 16:5250-5260. [PMID: 32458880 DOI: 10.1039/d0sm00203h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanoparticles (NPs) used for targeted delivery purposes are rapidly gaining importance in diagnostic and therapeutic fields. These agents have been studied extensively so far to reveal their optimal physicochemical properties including the effects of ligands and their density on the surface of NPs. This article was conducted through a computational approach (all-atom molecular dynamics simulations) to predict the stability of NPs based on a poly-lactic-co-glycolic acid (PLGA) hydrophobic core with a poly-ethylene glycol (PEG) hydrophilic shell and varying numbers of riboflavin (RF) molecules as ligands. Depending on the molecular weight of the polymers, the most stable composition of NPs was achieved at 20 wt% and 10 wt% PLGA-PEG-RF for PLGA3kDa-PEG2kDa and PLGA4.5kDa-PEG2kDa polymers, respectively. According to the simulations, riboflavin molecules were located on the surface of the NPs, which would indicate that riboflavin-bound PLGA-PEG NPs could be efficiently utilized for active targeting purposes. To scrutinize the simulation results, NPs with riboflavin ligands were synthesized and put into in vitro experiments. Outstandingly, the empirical outcomes revealed that the hydrodynamic sizes of NPs also met minimum points at 20 and 10 wt% for PLGA3kDa-PEG2kDa and PLGA4.5kDa-PEG2kDa, respectively. Moreover, similar trends in the gyration radius as a function of riboflavin content were observed in the simulation analysis and the experimental results, which would indicate that the method of molecular dynamics (MD) simulation is a reliable mathematical technique and could be applied for predicting the physicochemical properties of NPs.
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Affiliation(s)
- Sima Rezvantalab
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran, 1591634311, Iran.
| | - Mostafa Keshavarz Moraveji
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran, 1591634311, Iran.
| | - Mohammad Khedri
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran, 1591634311, Iran.
| | - Reza Maleki
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, 71345, Iran
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9
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Tuning the gelation behavior of short laminin derived peptides via solvent mediated self-assembly. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110483. [DOI: 10.1016/j.msec.2019.110483] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 11/17/2019] [Accepted: 11/20/2019] [Indexed: 12/12/2022]
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10
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Yamaguchi D, Ikemoto Y, Kato T. Thermally tunable selective formation of self-assembled fibers into two orthogonal directions in oriented liquid-crystalline smectic templates. Chem Commun (Camb) 2020; 56:9954-9957. [DOI: 10.1039/d0cc01950j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Two orthogonal (grid-like) and one directional fibrous structures are selectively formed through anisotropic self-assembly of low-molecular-weight gelators in liquid-crystalline smectic A templates depending on thermally tuned layered structures.
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Affiliation(s)
- Daisuke Yamaguchi
- Department of Chemistry and Biotechnology
- School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Yuka Ikemoto
- Japan Synchrotron Radiation Research Institute/SPring-8
- Sayo-gun
- Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology
- School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
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11
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Sikder A, Ray D, Aswal VK, Ghosh S. Hydrogen‐Bonding‐Regulated Supramolecular Nanostructures and Impact on Multivalent Binding. Angew Chem Int Ed Engl 2018; 58:1606-1611. [DOI: 10.1002/anie.201812217] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Amrita Sikder
- School of Applied and Interdisciplinary SciencesIndian Association for the Cultivation of Science Kolkata- 700032 India
| | - Debes Ray
- Solid State Physics DivisionBhabha Atomic Research Centre Mumbai- 400085 India
| | - Vinod K. Aswal
- Solid State Physics DivisionBhabha Atomic Research Centre Mumbai- 400085 India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary SciencesIndian Association for the Cultivation of Science Kolkata- 700032 India
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12
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Sikder A, Ray D, Aswal VK, Ghosh S. Hydrogen‐Bonding‐Regulated Supramolecular Nanostructures and Impact on Multivalent Binding. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812217] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Amrita Sikder
- School of Applied and Interdisciplinary SciencesIndian Association for the Cultivation of Science Kolkata- 700032 India
| | - Debes Ray
- Solid State Physics DivisionBhabha Atomic Research Centre Mumbai- 400085 India
| | - Vinod K. Aswal
- Solid State Physics DivisionBhabha Atomic Research Centre Mumbai- 400085 India
| | - Suhrit Ghosh
- School of Applied and Interdisciplinary SciencesIndian Association for the Cultivation of Science Kolkata- 700032 India
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13
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Asampille G, Verma BK, Swain M, Shettar A, Rosenzweig SA, Kondaiah P, Atreya HS. An ultra-stable redox-controlled self-assembling polypeptide nanotube for targeted imaging and therapy in cancer. J Nanobiotechnology 2018; 16:101. [PMID: 30526620 PMCID: PMC6286583 DOI: 10.1186/s12951-018-0427-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 11/24/2018] [Indexed: 01/10/2023] Open
Abstract
We introduce a self-assembling polypeptide-based nanotube system having the ability to specifically target cancer cells. The nanotubes target the cancer cell surface through integrin engagement with the help of multiple RGD units present along their surface. While the nanotubes are non-toxic towards cells in general, they can be loaded with suitable drugs to be released in a sustained manner in cancer cells. In addition, the nanotubes can be utilized for cellular imaging using any covalently tagged fluorescent dye. They are stable over a wide range of temperature due to intermolecular disulphide bonds formed during the self-assembly process. At the same time, presence of disulphide bonds provides a redox molecular switch for their degradation. Taken together this system provides a unique avenue for multimodal formulation in cancer therapy.
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Affiliation(s)
- Gitanjali Asampille
- NMR Research Centre, Indian Institute of Science, Bangalore, 560012, India.,Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India
| | - Brijesh Kumar Verma
- Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India
| | - Monalisa Swain
- NMR Research Centre, Indian Institute of Science, Bangalore, 560012, India.,Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India.,Basic Research Laboratory, National Cancer Institute, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Abhijith Shettar
- Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India.,Biotechnology Engineering, Ramaiah Institute of Technology, Bangalore, Karnataka, 560054, India
| | - Steven A Rosenzweig
- Department of Cell and Molecular Pharmacology, & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Paturu Kondaiah
- Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India.
| | - Hanudatta S Atreya
- NMR Research Centre, Indian Institute of Science, Bangalore, 560012, India.
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14
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Guskova O, Savchenko V, König U, Uhlmann P, Sommer JU. How do immobilised cell-adhesive Arg–Gly–Asp-containing peptides behave at the PAA brush surface? MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1502429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Olga Guskova
- Leibniz Institut für Polymerforschung Dresden e.V., Dresden, Germany
- Dresden Center for Computational Materials Science, Technische Universität Dresden, Dresden, Germany
| | - Vladyslav Savchenko
- Fakultät Umweltwissenschaften, Technische Universität Dresden, Dresden, Germany
| | - Ulla König
- Leibniz Institut für Polymerforschung Dresden e.V., Dresden, Germany
| | - Petra Uhlmann
- Leibniz Institut für Polymerforschung Dresden e.V., Dresden, Germany
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Jens-Uwe Sommer
- Leibniz Institut für Polymerforschung Dresden e.V., Dresden, Germany
- Dresden Center for Computational Materials Science, Technische Universität Dresden, Dresden, Germany
- Institut für Theoretische Physik, Technische Universität Dresden, Dresden, Germany
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15
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Smith DK. From fundamental supramolecular chemistry to self-assembled nanomaterials and medicines and back again – how Sam inspired SAMul. Chem Commun (Camb) 2018; 54:4743-4760. [DOI: 10.1039/c8cc01753k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Personal inspiration led to the development of a programme of research targeting the use of self-assembled systems in nanomedicine, which in the process of approaching a range of applications has uncovered new fundamental concepts in supramolecular science.
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16
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Travaglini L, Giordano C, D'Annibale A, Gubitosi M, di Gregorio MC, Schillén K, Stefanucci A, Mollica A, Pavel NV, Galantini L. Twisted nanoribbons from a RGD-bearing cholic acid derivative. Colloids Surf B Biointerfaces 2017; 159:183-190. [PMID: 28787634 DOI: 10.1016/j.colsurfb.2017.07.084] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/05/2017] [Accepted: 07/29/2017] [Indexed: 11/16/2022]
Abstract
In light of the biomedical interest for self-assembling amphiphiles bearing the tripeptide Arg-Gly-Gly (RGD), a cholic acid derivative was synthesized by introducing an aromatic moiety on the steroidal skeleton and the RGD sequence on the carboxylic function of its chain 17-24, thus forming a peptide amphiphile with the unconventional rigid amphiphilic structure of bile salts. In aqueous solution, the compound self-assembled into long twisted ribbons characterized by a very low degree of polydispersity in terms of width (≈25nm), thickness (≈4.5nm) and pitch (≈145nm). It was proposed that in the ribbon the molecules are arranged in a bilayer structure with the aromatic moieties in the interior, strongly involved in the intermolecular interaction, whereas the RGD residues are located at the bilayer-water interface. The nanostructure is significantly different from those generally provided by RGD-containing amphiphiles with the conventional peptide-tail structure, for which fibers with a circular cross-section were observed, and successfully tested as scaffolds for tissue regeneration. From previous work on the use of this kind of nanostructures, it is known that features like morphology, rigidity, epitope spacing and periodicity are important factors that dramatically affect cell adhesion and signaling. Within this context, the reported results demonstrate that bile salt-based peptide surfactants are promising building blocks in the preparation of non-trivial RGD-decorated nanoaggregates with well-defined morphologies and epitope distributions.
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Affiliation(s)
- Leana Travaglini
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Cesare Giordano
- Institute of Molecular Biology and Pathology, CNR, P.le A. Moro 5, 00185 Roma, Italy
| | - Andrea D'Annibale
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Marta Gubitosi
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | | | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, SE-221 00 Lund, Sweden
| | - Azzurra Stefanucci
- Department of Pharmacy, University of Chieti-Pescara "G. d'Annunzio", Via dei Vestini 31, 66100 Chieti, Italy
| | - Adriano Mollica
- Department of Pharmacy, University of Chieti-Pescara "G. d'Annunzio", Via dei Vestini 31, 66100 Chieti, Italy
| | - Nicolae Viorel Pavel
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Luciano Galantini
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
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17
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Chang R, Subramanian K, Wang M, Webster TJ. Enhanced Antibacterial Properties of Self-Assembling Peptide Amphiphiles Functionalized with Heparin-Binding Cardin-Motifs. ACS APPLIED MATERIALS & INTERFACES 2017; 9:22350-22360. [PMID: 28628296 DOI: 10.1021/acsami.7b07506] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The emergence of antibiotic resistance in bacteria has caused many healthcare problems and social burdens. In this study, a type of self-assembled peptide amphiphiles (PA) functionalized with a heparin-binding Cardin-motif peptide (sequence (AKKARK)2) has been designed to combat bacterial drug resistance. Above the critical micelle concentration (CMC) at 45 μM, these amphiphilic Cardin antimicrobial peptide (ACA-PA) can self-assemble into cylindrical supramolecular structures (7-10 nm in diameter) via hydrophobic interactions and β-sheet secondary conformation. The ACA-PA displays excellent antibacterial properties against both Gram-positive and Gram-negative bacteria. This work also demonstrates the effects of molecular self-assembly on antibacterial activity of peptide amphiphiles. The ACA-PA exhibits antibacterial activity on Gram-positive bacteria in a dose-dependent manner, but in the case of Gram-negative bacteria, the antibacterial potency of ACA-PA is remarkably enhanced at concentrations above the CMC. The ACA-PA has been shown to cause bacterial cytoplasmic leakage, causing localized membrane disruption in Gram-positive bacteria and blisters on disorganized membranes of Gram-negative bacteria. Therefore, these peptide-based nanoparticles have promising potential as antimicrobial agents without resorting to the use of antibiotics, and, thus, should be further studied for a wide range of biomaterial applications.
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Affiliation(s)
- Run Chang
- Department of Chemical Engineering, Northeastern University , 313 Snell Engineering Center, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Keerthana Subramanian
- Department of Chemical Engineering, Northeastern University , 313 Snell Engineering Center, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Mian Wang
- Department of Chemical Engineering, Northeastern University , 313 Snell Engineering Center, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
| | - Thomas J Webster
- Department of Chemical Engineering, Northeastern University , 313 Snell Engineering Center, 360 Huntington Avenue, Boston, Massachusetts 02115, United States
- Wenzhou Institute of Biomaterials and Engineering , Wenzhou, China
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18
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Hinman SS, Ruiz CJ, Cao Y, Ma MC, Tang J, Laurini E, Posocco P, Giorgio S, Pricl S, Peng L, Cheng Q. Mix and Match: Coassembly of Amphiphilic Dendrimers and Phospholipids Creates Robust, Modular, and Controllable Interfaces. ACS APPLIED MATERIALS & INTERFACES 2017; 9:1029-1035. [PMID: 27957833 PMCID: PMC6041472 DOI: 10.1021/acsami.6b11556] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Self-assembly of supramolecular structures has become an attractive means to create new biologically inspired materials and interfaces. We report the first robust hybrid bilayer systems readily coassembled from amphiphilic dendrimers and a naturally occurring phospholipid. Both concentration and generation of the dendrimers have direct impacts on the biophysical properties of the coassemblies. Raising the dendrimer concentration increases the hybrid bilayer stability, while changes in the generation and the concentration of the embedded dendrimers impact the fluidity of the coassembled systems. Multivalent dendrimer amine terminals allow for nondestructive in situ derivatization, providing a convenient approach to decorate and modulate the local environment of the hybrid bilayer. The coassembly of lipid/dendrimer interfaces offers a unique platform for the creation of hybrid systems with modular and precisely controllable behavior for further applications in sensing and drug delivery.
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Affiliation(s)
- Samuel S. Hinman
- Environmental Toxicology, University of California, Riverside, Riverside, California 92521, United States
| | - Charles J. Ruiz
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
| | - Yu Cao
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, Equipe Labellisée Ligue Contre le Cancer, 13288 Marseille, France
| | - Meghann C. Ma
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
| | - Jingjie Tang
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, Equipe Labellisée Ligue Contre le Cancer, 13288 Marseille, France
| | - Erik Laurini
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA), Trieste University, 34127 Trieste, Italy
| | - Paola Posocco
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA), Trieste University, 34127 Trieste, Italy
| | - Suzanne Giorgio
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, Equipe Labellisée Ligue Contre le Cancer, 13288 Marseille, France
| | - Sabrina Pricl
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA), Trieste University, 34127 Trieste, Italy
| | - Ling Peng
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, Equipe Labellisée Ligue Contre le Cancer, 13288 Marseille, France
| | - Quan Cheng
- Environmental Toxicology, University of California, Riverside, Riverside, California 92521, United States
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
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19
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Rodrigo AC, Bromfield SM, Laurini E, Posocco P, Pricl S, Smith DK. Morphological control of self-assembled multivalent (SAMul) heparin binding in highly competitive media. Chem Commun (Camb) 2017; 53:6335-6338. [DOI: 10.1039/c7cc02990j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Shape control – self-assembly of ligands into different morphologies directs their ability to bind heparin.
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Affiliation(s)
| | | | - Erik Laurini
- Simulation Engineering (MOSE) Laboratory
- Department of Engineering and Architectures (DEA)
- University of Trieste
- Trieste
- Italy
| | - Paola Posocco
- Simulation Engineering (MOSE) Laboratory
- Department of Engineering and Architectures (DEA)
- University of Trieste
- Trieste
- Italy
| | - Sabrina Pricl
- Simulation Engineering (MOSE) Laboratory
- Department of Engineering and Architectures (DEA)
- University of Trieste
- Trieste
- Italy
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20
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Xu F, Liu J, Tian J, Gao L, Cheng X, Pan Y, Sun Z, Li X. Supramolecular Self-Assemblies with Nanoscale RGD Clusters Promote Cell Growth and Intracellular Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:29906-29914. [PMID: 27759366 DOI: 10.1021/acsami.6b08624] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, we reported the generation of a novel supramolecular hydrogelator from a peptide derivative which consisted of a structural motif (e.g., Fc-FF) for supramolecular self-assembly and a functional moiety (e.g., RGD) for integrin binding. Following self-assembly in water at neutral pH, this molecule first tended to form metastable spherical aggregates, which subsequently underwent a morphological transformation to form high-aspect-ratio nanostructures over 2 h when aged at room temperature. More importantly, because of the presence of nanoscale RGD clusters on the surface of nanostructures, the self-assembled nanomaterials (e.g., nanoparticles and nanofibers) can be potentially used as a biomimetic matrix for cell culture and as a vector for cell-targeting drug delivery via multivalent RGD-integrin interactions.
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Affiliation(s)
- Fengyang Xu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Jie Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Jian Tian
- School of Biology and Basic Medical Science, Soochow University , Suzhou 215123, China
| | - Linfeng Gao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Xiaju Cheng
- School of Biology and Basic Medical Science, Soochow University , Suzhou 215123, China
| | - Yue Pan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
| | - Ziling Sun
- School of Biology and Basic Medical Science, Soochow University , Suzhou 215123, China
| | - Xinming Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, China
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University , Shanghai 200433, China
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21
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Fechner LE, Albanyan B, Vieira VMP, Laurini E, Posocco P, Pricl S, Smith DK. Electrostatic binding of polyanions using self-assembled multivalent (SAMul) ligand displays - structure-activity effects on DNA/heparin binding. Chem Sci 2016; 7:4653-4659. [PMID: 30155113 PMCID: PMC6013769 DOI: 10.1039/c5sc04801j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/07/2016] [Indexed: 01/11/2023] Open
Abstract
This paper reports that modifying the ligands in self-assembled multivalent (SAMul) displays has an impact on apparent binding selectivity towards two nanoscale biological polyanions - heparin and DNA. For the nanostructures assayed here, spermidine ligands are optimal for heparin binding but spermine ligands are preferred for DNA. Probing subtle differences in such nanoscale binding interfaces is a significant challenge, and as such, several experimental binding assays - competition assays and isothermal calorimetry - are employed to confirm differences in affinity and provide thermodynamic insights. Given the dynamic nature and hierarchical binding processes involved in SAMul systems, we employed multiscale modelling to propose reasons for the origins of polyanion selectivity differences. The modelling results, when expressed in thermodynamic terms and compared with the experimental data, suggest that DNA is a shape-persistent polyanion, and selectivity originates only from ligand preferences, whereas heparin is more flexible and adaptive, and as such, actively reinforces ligand preferences. As such, this study suggests that inherent differences between polyanions may underpin subtle binding selectivity differences, and that even simple electrostatic interfaces such as these can have a degree of tunability, which has implications for biological control and regulation on the nanoscale.
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Affiliation(s)
- Loryn E Fechner
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK .
| | - Buthaina Albanyan
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK .
| | - Vânia M P Vieira
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK .
| | - Erik Laurini
- Simulation Engineering (MOSE) Laboratory , Department of Engineering and Architectures (DEA) , University of Trieste , Trieste , 34127 , Italy .
| | - Paola Posocco
- Simulation Engineering (MOSE) Laboratory , Department of Engineering and Architectures (DEA) , University of Trieste , Trieste , 34127 , Italy .
| | - Sabrina Pricl
- Simulation Engineering (MOSE) Laboratory , Department of Engineering and Architectures (DEA) , University of Trieste , Trieste , 34127 , Italy .
| | - David K Smith
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK .
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22
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Chan CW, Laurini E, Posocco P, Pricl S, Smith DK. Chiral recognition at self-assembled multivalent (SAMul) nanoscale interfaces – enantioselectivity in polyanion binding. Chem Commun (Camb) 2016; 52:10540-3. [DOI: 10.1039/c6cc04470k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We investigate structure–activity effect relationships at the nanoscale chiral molecular recognition interface between enantiomeric self-assembled multivalent (SAMul) systems and biological polyanions, heparin and DNA.
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Affiliation(s)
| | - Erik Laurini
- Simulation Engineering (MOSE) Laboratory
- Department of Engineering and Architectures (DEA)
- University of Trieste
- Trieste
- Italy
| | - Paola Posocco
- Simulation Engineering (MOSE) Laboratory
- Department of Engineering and Architectures (DEA)
- University of Trieste
- Trieste
- Italy
| | - Sabrina Pricl
- Simulation Engineering (MOSE) Laboratory
- Department of Engineering and Architectures (DEA)
- University of Trieste
- Trieste
- Italy
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23
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Sur S, Tantakitti F, Matson JB, Stupp SI. Epitope topography controls bioactivity in supramolecular nanofibers. Biomater Sci 2015; 3:530-532. [PMID: 25745558 PMCID: PMC4346041 DOI: 10.1039/c4bm00326h] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Incorporating bioactivity into artificial scaffolds using peptide epitopes present in the extracellular matrix (ECM) is a well-known approach. A common strategy has involved epitopes that provide cells with attachment points and external cues through interaction with integrin receptors. Although a variety of bioactive sequences have been identified so far, less is known about their optimal display in a scaffold. We report here on the use of self-assembled peptide amphiphile (PA) nanofiber matrices to investigate the impact of spatial presentation of the fibronectin derived epitope RGDS on cell response. Using one, three, or five glycine residues, RGDS epitopes were systematically spaced out from the surface of the rigid nanofibers. We found that cell morphology was strongly affected by the separation of the epitope from the nanofiber surface, with the longest distance yielding the most cell-spreading, bundling of actin filaments, and a round-to-polygonal transformation of cell shape. Cell response to this type of epitope display was also accompanied with activated integrin-mediated signaling and formation of stronger adhesions between cells and substrate. Interestingly, unlike length, changing the molecular flexibility of the linker had minimal influence on cell behavior on the substrate for reasons that remain poorly understood. The use in this study of high persistence length nanofibers rather than common flexible polymers allows us to conclude that epitope topography at the nanoscale structure of a scaffold influences its bioactive properties independent of epitope density and mechanical properties.
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Affiliation(s)
- Shantanu Sur
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, United States
- Department of Biology, Clarkson University, Potsdam, NY 13699, United States
| | - Faifan Tantakitti
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, United States
| | - John B. Matson
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, United States
- Department of Chemistry, Virginia Tech, Blacksburg, VA, 24061, United States
| | - Samuel I. Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, 60611, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, United States
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, United States
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, United States
- Department of Medicine, Northwestern University, Chicago, IL, 60611, United States
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24
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Mehrabadi FS, Hirsch O, Zeisig R, Posocco P, Laurini E, Pricl S, Haag R, Kemmner W, Calderón M. Structure–activity relationship study of dendritic polyglycerolamines for efficient siRNA transfection. RSC Adv 2015. [DOI: 10.1039/c5ra10944b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structure–activity relationship studies were performed through in vitro, in silico, and in vivo analysis in order to evaluate the gene transfection potential of dendritic polyglycerolamines with different amine loadings.
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Affiliation(s)
| | - Ole Hirsch
- Physikalisch-Technische Bundesanstalt
- 10587 Berlin
- Germany
| | - Reiner Zeisig
- Experimental Pharmacology & Oncology GmbH
- 13125 Berlin
- Germany
| | - Paola Posocco
- Molecular Simulation Engineering (MOSE) Laboratory
- DICAMP
- University of Trieste
- 34127 Trieste
- Italy
| | - Erik Laurini
- Molecular Simulation Engineering (MOSE) Laboratory
- DICAMP
- University of Trieste
- 34127 Trieste
- Italy
| | - Sabrina Pricl
- Molecular Simulation Engineering (MOSE) Laboratory
- DICAMP
- University of Trieste
- 34127 Trieste
- Italy
| | - Rainer Haag
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Wolfgang Kemmner
- Translational Oncology
- Experimental and Clinical Research Center
- 13125 Berlin
- Germany
| | - Marcelo Calderón
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
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25
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Bromfield SM, Posocco P, Fermeglia M, Tolosa J, Herreros-López A, Pricl S, Rodríguez-López J, Smith DK. Shape-Persistent and Adaptive Multivalency: Rigid Transgeden (TGD) and Flexible PAMAM Dendrimers for Heparin Binding. Chemistry 2014; 20:9666-74. [DOI: 10.1002/chem.201402237] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Indexed: 11/06/2022]
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26
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Tschiche A, Malhotra S, Haag R. Nonviral gene delivery with dendritic self-assembling architectures. Nanomedicine (Lond) 2014; 9:667-93. [DOI: 10.2217/nnm.14.32] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In this review, we outline the concept and applicability of self-assembling dendrimers for gene-delivery applications. Low-molecular-weight, well-defined cationic dendritic arrays which have been modified with hydrophobic domains can form self-organized multivalent systems that have significant advantages over nonassembling, high-molecular-weight/polymeric gene vectors. Particular structural variations have been highlighted with respect to the individual components of the displayed dendritic amphiphiles, namely, the employed amine termini, the hydrophobic segment, the size of the dendritic array, and the integration of special features such as targeting ability and cleavability/degradability, which can all have a crucial effect on gene-transfection efficiencies. Accordingly, the scientific efforts to create new synthetic gene-delivery vectors to act as promising in vivo transfection agents in the future will be presented and discussed here.
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Affiliation(s)
- Ariane Tschiche
- Institute of Chemistry & Biochemistry, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Shashwat Malhotra
- Institute of Chemistry & Biochemistry, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
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27
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Boekhoven J, Stupp SI. 25th anniversary article: supramolecular materials for regenerative medicine. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:1642-59. [PMID: 24496667 PMCID: PMC4015801 DOI: 10.1002/adma.201304606] [Citation(s) in RCA: 245] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 11/22/2013] [Indexed: 05/17/2023]
Abstract
In supramolecular materials, molecular building blocks are designed to interact with one another via non-covalent interactions in order to create function. This offers the opportunity to create structures similar to those found in living systems that combine order and dynamics through the reversibility of intermolecular bonds. For regenerative medicine there is a great need to develop materials that signal cells effectively, deliver or bind bioactive agents in vivo at controlled rates, have highly tunable mechanical properties, but at the same time, can biodegrade safely and rapidly after fulfilling their function. These requirements make supramolecular materials a great platform to develop regenerative therapies. This review illustrates the emerging science of these materials and their use in a number of applications for regenerative medicine.
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Affiliation(s)
- Job Boekhoven
- Institute for Bio Nanotechnology in Medicine, Northwestern University, Chicago, Illinois, USA
| | - Samuel I. Stupp
- Departments of Materials Science and Engineering, Chemistry, and Medicine, Institute for Bio Nanotechnology in Medicine, Northwestern University, Chicago, Illinois, USA, , Homepage: http://stupp.northwestern.edu
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28
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Bromfield SM, Posocco P, Chan CW, Calderon M, Guimond SE, Turnbull JE, Pricl S, Smith DK. Nanoscale self-assembled multivalent (SAMul) heparin binders in highly competitive, biologically relevant, aqueous media. Chem Sci 2014. [DOI: 10.1039/c4sc00298a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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29
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Barnard A, Posocco P, Fermeglia M, Tschiche A, Calderon M, Pricl S, Smith DK. Double-degradable responsive self-assembled multivalent arrays--temporary nanoscale recognition between dendrons and DNA. Org Biomol Chem 2013; 12:446-55. [PMID: 24263553 DOI: 10.1039/c3ob42202j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This article reports self-assembling dendrons which bind DNA in a multivalent manner. The molecular design directly impacts on self-assembly which subsequently controls the way these multivalent nanostructures bind DNA--this can be simulated by multiscale modelling. Incorporation of an S-S linkage between the multivalent hydrophilic dendron and the hydrophobic units responsible for self-assembly allows these structures to undergo triggered reductive cleavage, with dithiothreitol (DTT) inducing controlled breakdown, enabling the release of bound DNA. As such, the high-affinity self-assembled multivalent binding is temporary. Furthermore, because the multivalent dendrons are constructed from esters, a second slow degradation step causes further breakdown of these structures. This two-step double-degradation mechanism converts a large self-assembling unit with high affinity for DNA into small units with no measurable binding affinity--demonstrating the advantage of self-assembled multivalency (SAMul) in achieving highly responsive nanoscale binding of biological targets.
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Affiliation(s)
- Anna Barnard
- Department of Chemistry, University of York, Heslington, York YO10 5DD, UK.
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