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Pourbadiei B, Adlsadabad SY, Rahbariasr N, Pourjavadi A. Synthesis and characterization of dual light/temperature-responsive supramolecular injectable hydrogel based on host-guest interaction between azobenzene and starch-grafted β-cyclodextrin: Melanoma therapy with paclitaxel. Carbohydr Polym 2023; 313:120667. [PMID: 37182982 DOI: 10.1016/j.carbpol.2023.120667] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 01/23/2023] [Accepted: 02/02/2023] [Indexed: 02/25/2023]
Abstract
Injectable stimuli-responsive hydrogels could offer an opportunity for local administration at the tumor site and a sustained drug release. In this paper, a copolymer of azobenzene derivative and N-isopropyl acrylamide (NIPAM) was synthesized, which are performed as light- and thermo-sensitive parts, respectively. The DAS@SCD/NIPAZO hydrogel was prepared upon the establishment of host-guest interactions between the hydrophobic core of CD and azobenzene moiety. The LCST of the synthesized copolymer was modified from 31.3 °C to 36.5 °C by the incorporation of the hydrophilic host moieties of the modified starch into the NIPAM copolymer structure. The LCST-based property of the hydrogel made it syringable in low temperatures and switch to a gel state after local injection. The drug release profile of the hydrogel was explored in four different conditions involving two distinct temperatures combined with two different light wavelengths to examine the light- and thermo-sensitivity of the hydrogel. Moreover, a Paclitaxel-loaded hydrogel was prepared to study the in vitro efficiency of the sample and was investigated by MTT assay against the cancerous fibroblastic cells (A-431), which revealed a sharp decline in cell viability under 365 nm light irradiation; furthermore, to evaluate the in vivo effects of the PTX-loaded hydrogel, histological studies based on staining techniques were carried out.
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Hintzen KW, Simons C, Schaffrath K, Roessler G, Johnen S, Jakob F, Walter P, Schwaneberg U, Lohmann T. BioAdhere: tailor-made bioadhesives for epiretinal visual prostheses. Biomater Sci 2022; 10:3282-3295. [PMID: 35583519 DOI: 10.1039/d1bm01946e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Introduction: Visual prostheses, i.e. epiretinal stimulating arrays, are a promising therapy in treating retinal dystrophies and degenerations. In the wake of a new generation of devices, an innovative method for epiretinal fixation of stimulator arrays is required. We present the development of tailor-made bioadhesive peptides (peptesives) for fixating epiretinal stimulating arrays omitting the use of traumatic retinal tacks. Materials and methods: Binding motifs on the stimulating array (poly[chloro-p-xylylene] (Parylene C)) and in the extracellular matrix of the retinal surface (collagens I and IV, laminin, fibronectin) were identified. The anchor peptides cecropin A (CecA), KH1, KH2 (author's initials) and osteopontin (OPN) were genetically fused to reporter proteins to assess their binding behavior to coated microtiter plates via fluorescence-based assays. Domain Z (DZ) of staphylococcal protein A was used as a separator to generate a bioadhesive peptide. Following ISO 10993 "biological evaluation of medical materials", direct and non-direct cytotoxicity testing (L-929 and R28 retinal progenitor cells) was performed. Lastly, the fixating capabilities of the peptesives were tested in proof-of-principle experiments. Results: The generation of the bioadhesive peptide required evaluation of the N- and C-anchoring of investigated APs. The YmPh-CecA construct showed the highest activity on Parylene C in comparison with the wildtype phytase without the anchor peptide. eGFP-OPN was binding to all four investigated ECM proteins (collagen I, laminin > collagen IV, fibronectin). The strongest binding to collagen I was observed for eGFP-KH1, while the strongest binding to fibronectin was observed for eGFP-KH2. The selectivity of binding was checked by incubating eGFP-CecA and eGFP-OPN on ECM proteins and on Parylene C, respectively. Direct and non-direct cytotoxicity testing of the peptide cecropin-A-DZ-OPN using L-929 and R28 cells showed good biocompatibility properties. Proof-of-concept experiments in post-mortem rabbit eyes suggested an increased adhesion of CecA-DZ-OPN-coated stimulating arrays. Conclusion: This is the first study to prove the applicability and biocompatibility of peptesives for the fixation of macroscopic objects.
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Affiliation(s)
- Kai-Wolfgang Hintzen
- Institute of Biotechnology, RWTH Aachen University, Aachen, Germany.,DWI - Leibniz-Institute for Interactive Materials, Aachen, Germany
| | - Christian Simons
- DWI - Leibniz-Institute for Interactive Materials, Aachen, Germany
| | - Kim Schaffrath
- Department of Ophthalmology, RWTH Aachen University, Aachen, Germany.
| | - Gernot Roessler
- Department of Ophthalmology, RWTH Aachen University, Aachen, Germany.
| | - Sandra Johnen
- Department of Ophthalmology, RWTH Aachen University, Aachen, Germany.
| | - Felix Jakob
- Institute of Biotechnology, RWTH Aachen University, Aachen, Germany.,DWI - Leibniz-Institute for Interactive Materials, Aachen, Germany
| | - Peter Walter
- Department of Ophthalmology, RWTH Aachen University, Aachen, Germany.
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Aachen, Germany.,DWI - Leibniz-Institute for Interactive Materials, Aachen, Germany
| | - Tibor Lohmann
- Department of Ophthalmology, RWTH Aachen University, Aachen, Germany.
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Terai T, Anzai H, Nemoto N. Selection of Peptides that Associate with Dye-Conjugated Solid Surfaces in a pH-Dependent Manner Using cDNA Display. ACS OMEGA 2019; 4:7378-7384. [PMID: 31459836 PMCID: PMC6649003 DOI: 10.1021/acsomega.9b00631] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 04/12/2019] [Indexed: 05/10/2023]
Abstract
Peptides that recognize artificial materials including synthetic polymers and small molecules are drawing attention in the fields of biotechnology and chemical biology. In particular, reversible peptide aptamers that associate with the target molecules only under specific conditions are interesting. In this work, peptide aptamers that recognize a phenolphthalein derivative (PhP: a pH-sensitive organic dye) immobilized on a solid surface in a pH-dependent manner were selected using an in vitro display method (cDNA display). Considering the hydrophobic and aromatic nature of PhP, we prepared a biased DNA library (3A library) that encodes more aromatic amino acids than the standard random codon and performed seven rounds of selection from >1010 peptide species. The selected peptides including LVFLIWWM (LV59) associated with PhP-modified solid support (sepharose resin and magnetic beads) in neutral buffer but readily dissociated under basic conditions where PhP undergoes large structural change from lactone to quinoid, which is accompanied by increase of hydrophilicity and anionic charge. Control experiments suggested that LV59 recognized both phenol and lactone moieties, and the association under neutral pH is mainly driven by π-stacking and hydrophobic interaction between the peptide and PhP. Notably, however, total hydrophobicity and number of aromatic rings did not completely explain the affinity, and sequence specificity was observed to some extent. After further optimization, this interaction pair would be practically useful for protein purification.
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Affiliation(s)
- Takuya Terai
- Graduate
School of Science and Engineering, Saitama
University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama 338-8570, Japan
- E-mail: (T.T.)
| | - Hiroki Anzai
- Graduate
School of Science and Engineering, Saitama
University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama 338-8570, Japan
| | - Naoto Nemoto
- Graduate
School of Science and Engineering, Saitama
University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama 338-8570, Japan
- Epsilon
Molecular Engineering, Company Limited, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama 338-8570, Japan
- E-mail: . Phone: +81-48-858-3531 (N.N.)
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Günay KA, Klok HA. Identification of Soft Matter Binding Peptide Ligands Using Phage Display. Bioconjug Chem 2015; 26:2002-15. [PMID: 26275106 DOI: 10.1021/acs.bioconjchem.5b00377] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Phage display is a powerful tool for the selection of highly affine, short peptide ligands. While originally primarily used for the identification of ligands to proteins, the scope of this technique has significantly expanded over the past two decades. Phage display nowadays is also increasingly applied to identify ligands that selectively bind with high affinity to a broad range of other substrates including natural and biological polymers as well as a variety of low-molecular-weight organic molecules. Such peptides are of interest for various reasons. The ability to selectively and with high affinity bind to the substrate of interest allows the conjugation or immobilization of, e.g., nanoparticles or biomolecules, or generally, facilitates interactions at materials interfaces. On the other hand, presentation of peptide ligands that selectively bind to low-molecular-weight organic materials is of interest for the development of sensor surfaces. The aim of this article is to highlight the opportunities provided by phage display for the identification of peptide ligands that bind to synthetic or natural polymer substrates or to small organic molecules. The article will first provide an overview of the different peptide ligands that have been identified by phage display that bind to these "soft matter" targets. The second part of the article will discuss the different characterization techniques that allow the determination of the affinity of the identified ligands to the respective substrates.
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Affiliation(s)
- Kemal Arda Günay
- École Polytechnique Fédérale de Lausanne (EPFL) , Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- École Polytechnique Fédérale de Lausanne (EPFL) , Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, Bâtiment MXD, Station 12, CH-1015 Lausanne, Switzerland
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Berges R, Balzeau J, Takahashi M, Prevost C, Eyer J. Structure-function analysis of the glioma targeting NFL-TBS.40-63 peptide corresponding to the tubulin-binding site on the light neurofilament subunit. PLoS One 2012; 7:e49436. [PMID: 23152907 PMCID: PMC3494675 DOI: 10.1371/journal.pone.0049436] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 10/08/2012] [Indexed: 11/23/2022] Open
Abstract
We previously reported that a 24 amino acid peptide (NFL-TBS.40-63) corresponding to the tubulin-binding site located on the light neurofilament subunit, selectively enters in glioblastoma cells where it disrupts their microtubule network and inhibits their proliferation. Here, we analyzed the structure-function relationships using an alanine-scanning strategy, in order to identify residues essential for these biological activities. We showed that the majority of modified peptides present a decreased or total loss to penetrate in these cells, or to alter microtubules. Correspondingly, circular dichroism measurements showed that this peptide forms either β-sheet or α-helix structures according to the solvent and that alanine substitution modified or destabilized the structure, in relation with changes in the biological activities. Moreover, substitution of serine residues by phosphoserine or aspartic acid concomitantly decreased the cell penetrating activity and the structure stability. These results indicate the importance of structure for the activities, including selectivity to glioblastoma cells of this peptide, and its regulation by phosphorylation.
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Affiliation(s)
| | | | | | | | - Joel Eyer
- Laboratoire de Neurobiologie & Transgenèse, UPRES EA 3143, INSERM, Centre Hospitalier Universitaire, Angers, France
- * E-mail:
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Speight RE, Cooper MA. A Survey of the 2010 Quartz Crystal Microbalance Literature. J Mol Recognit 2012; 25:451-73. [DOI: 10.1002/jmr.2209] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Robert E. Speight
- Institute for Molecular Bioscience; The University of Queensland; St. Lucia; Brisbane; 4072; Australia
| | - Matthew A. Cooper
- Institute for Molecular Bioscience; The University of Queensland; St. Lucia; Brisbane; 4072; Australia
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Chen J, Serizawa T, Komiyama M. Recognition of Photoresponsive Polymer Targets by Protein Fused withcis-Form Azobenzene-binding Peptide. CHEM LETT 2011. [DOI: 10.1246/cl.2011.482] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Serizawa T, Matsuno H, Sawada T. Specific interfaces between synthetic polymers and biologically identified peptides. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10602c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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