Post-Imprinting-Modified Molecularly Imprinted Nanocavities with Two Synergetic, Orthogonal, Glycoprotein-Binding Sites to Transduce Binding Events into Fluorescence Changes

ChemNanoMat ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 224-229 ◽  
Author(s):  
Takahiro Morishige ◽  
Eri Takano ◽  
Hirobumi Sunayama ◽  
Yukiya Kitayama ◽  
Toshifumi Takeuchi
Keyword(s):  
Binding Sites ◽  
Molecularly Imprinted

scholarly journals Molecular Recognition: Perspective and a New Approach

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2757
Author(s):  
W. Rudolf Seitz ◽  
Casey J. Grenier ◽  
John R. Csoros ◽  
Rongfang Yang ◽  
Tianyu Ren
Keyword(s):  
Molecular Recognition ◽  
Molecularly Imprinted Polymers ◽  
Binding Sites ◽  
Binding Kinetics ◽  
Molecularly Imprinted ◽  
New Approach ◽  
Imprinted Polymers ◽  
High Affinity ◽  
Water Blocking ◽  
High Level

This perspective presents an overview of approaches to the preparation of molecular recognition agents for chemical sensing. These approaches include chemical synthesis, using catalysts from biological systems, partitioning, aptamers, antibodies and molecularly imprinted polymers. The latter three approaches are general in that they can be applied with a large number of analytes, both proteins and smaller molecules like drugs and hormones. Aptamers and antibodies bind analytes rapidly while molecularly imprinted polymers bind much more slowly. Most molecularly imprinted polymers, formed by polymerizing in the presence of a template, contain a high level of covalent crosslinker that causes the polymer to form a separate phase. This results in a material that is rigid with low affinity for analyte and slow binding kinetics. Our approach to templating is to use predominantly or exclusively noncovalent crosslinks. This results in soluble templated polymers that bind analyte rapidly with high affinity. The biggest challenge of this approach is that the chains are tangled when the templated polymer is dissolved in water, blocking access to binding sites.

Application of Response Surface Methodology to Synthesize Appropriate Molecularly Imprinted Polymer for Diazinon

2014 ◽  
Vol 605 ◽  
pp. 67-70 ◽  
Author(s):  
Mohsen Rahiminezhad ◽  
Seyed Jamaleddin Shahtaheri ◽  
Mohammad Reza Ganjali ◽  
Abbas Rahimi Rahimi Forushani
Keyword(s):  
Molecular Imprinting ◽  
Molecularly Imprinted Polymer ◽  
Binding Sites ◽  
Capillary Electrochromatography ◽  
Template Molecule ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Functional Monomers ◽  
Molecular Imprinting Technology ◽  
Cross Linker

Molecular imprinting technology has become an interesting research area to the preparation of specific sorbent material for environmental and occupational sample preparation techniques (1). In the molecular imprinting technology, specific binding sites have been formed in polymeric matrix, which often have an affinity and selectivity similar to antibody-antigen systems (2). In molecular imprinted technology, functional monomers are arranged in a complementary configuration around a template molecule, then, cross-linker and solvent are also added and the mixture is treated to give a porous material containing nono-sized binding sites. After extraction of the template molecule by washing, vacant imprinted sites will be left in polymer, which are available for rebinding of the template or its structural analogue (3). The stability, convention of preparation and low cost of these materials make them particularly attractive (4). These synthetic materials have been used for capillary electrochromatography (5), chromatography columns (6), sensors (7), and catalyze system (8). Depending on the molecular imprinting approach, different experimental variables such as the type and amounts of functional monomers, porogenic solvent, initiator, monomer to cross-linker ratio, temperature, and etc may alter the properties of the final polymeric materials. In this work, chemometric approach based on Central Composite Design (CCD) was used to design the experiments as well as to find the optimum conditions for preparing appropriate diazinon molecularly imprinted polymer.

scholarly journals Recent advances in green reagents for molecularly imprinted polymers

RSC Advances ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 311-327 ◽  
Author(s):  
Xi Wu ◽  
Jiajun Du ◽  
Mengyao Li ◽  
Lintao Wu ◽  
Chun Han ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Binding Sites ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Recent Advances ◽  
Green Reagents

Molecularly imprinted polymers (MIPs) are tailor-made materials with special binding sites.

Oligonucleotide Imprinting in Aqueous Environment

2002 ◽  
Vol 723 ◽  
Author(s):  
Dolly Batra ◽  
Kenneth J. Shea
Keyword(s):  
Binding Sites ◽  
Mobile Phase ◽  
Water Soluble ◽  
Aqueous Environment ◽  
Imprinted Polymer ◽  
Network Polymer ◽  
Separation Science ◽  
Molecularly Imprinted ◽  
Synthetic Receptor ◽  
Complementary Binding

AbstractThe development of synthetic receptors that recognize nucleotide bases and their derivatives is an important area of research [1-3]. Applications are envisioned in separation science, biosensors, drug therapy and genetic engineering. Previously in this laboratory, we have developed a molecularly imprinted synthetic receptor for 9-ethyladenine (9-EA). The network polymer has an affinity for adenine and its derivatives with an average association constant (Ka) of 75,000 M–1 in CHCl3 [4]. When a 9-EA imprinted polymer was used as the chromatographic support, adenine eluted at 27 minutes using 92.5/5/0/2.5 CH3CN/H2O/CH3CO2H as the mobile phase, while cytosine, guanine and thymine derivatives all eluted close to the void volume (2.0 min). In addition, imprinted polymers have been made with complementary binding sites for cytosine and guanine [5], as well as other nucleotide base analogues [6].The extension of these results to construct robust receptors for oligonucleotides requires fundamental changes in imprinting strategies. Most importantly, since oligonucleotides are water soluble, strategies that employ EGDMA/MAA formulations in organic solvents will need to be replaced with those that do not compromise the interactions between template (the oligo) and functional monomer.Initially, the imprinting of a 2'-deoxyadenosine dimer (1) was attempted. Due to the hydrophilicity of a DNA oligomer, it was difficult to find a suitable organic solvent that would solubilize the oligomers without disrupting the template's interaction with the polymer matrix [7]. To combat the solubility problems and to insure the homogeniety of the polymerization solution, we examined various polymer formulations with organic and/or aqueous-based solvents that would dissolve the template without disrupting these key interactions.

Pressure-Induced Binding Sites in Molecularly Imprinted Network Polymers

1997 ◽  
Vol 30 (8) ◽  
pp. 2454-2459 ◽  
Author(s):  
Börje Sellergren ◽  
Christian Dauwe ◽  
Thomas Schneider
Keyword(s):  
Binding Sites ◽  
Molecularly Imprinted ◽  
Network Polymers

scholarly journals ATP-binding peptide-hydrogel composite synthesized by molecular imprinting on beads

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Ayana Takata ◽  
Kenji Usui ◽  
Jun Matsui
Keyword(s):  
Molecular Imprinting ◽  
Molecularly Imprinted Polymers ◽  
Binding Sites ◽  
Peptide Conformation ◽  
Recognition Site ◽  
Mutual Orientation ◽  
Atp Binding ◽  
Molecularly Imprinted ◽  
Hydrogel Composite ◽  
Peptide Hydrogel

AbstractMolecular imprinting has been recognized as a useful technique to produce synthetic mimics of functional proteins, such as antibodies and enzymes. However, only a few studies have examined peptides as starting materials for synthesizing molecularly imprinted polymers in spite of the expectation that peptides would be suitable materials for realizing water-compatibility and proteinlike functions. In this study, molecular imprinting was performed using a vinyl-end-capped on-beads-peptide as functional monomer to produce an on-beads-peptide hydrogel composite selective for ATP; the on-beadspeptide peptide, of which sequence was designed to possess both an adenine-recognition site and phosphate recognition site, was co-polymerized with NIPAM and BIS in the presence of ATP as a template species. The resultant ATP-imprinted composite showed 14-times higher affinity and an enhanced selectivity towards ATP, suggesting that the peptide conformation, i.e. a mutual orientation of the two binding sites, was pre-organized and immobilized in a manner where the ATP binding is more favored.

A new restricted access molecularly imprinted fiber for direct solid phase microextraction of benzodiazepines from plasma samples

The Analyst ◽  
2019 ◽  
Vol 144 (14) ◽  
pp. 4320-4330 ◽  
Author(s):  
Lailah Cristina de Carvalho Abrão ◽  
Eduardo Costa Figueiredo
Keyword(s):  
Sample Preparation ◽  
Molecularly Imprinted Polymers ◽  
Binding Sites ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Plasma Samples ◽  
Molecularly Imprinted ◽  
Restricted Access ◽  
Imprinted Polymers ◽  
Direct Solid

Restricted access molecularly imprinted polymers (RAMIPs) are hybrid materials that present selective binding sites for a template (or similar molecules), and an external hydrophilic layer that avoids the binding of proteins to the material, making them appropriate for the sample preparation of protein fluids.

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