Intracellular delivery of a molecularly imprinted peroxidase mimicking DNAzyme for selective oxidation

2018 ◽  
Vol 5 (4) ◽  
pp. 738-744 ◽  
Author(s):  
Zijie Zhang ◽  
Juewen Liu
Keyword(s):  
Selective Oxidation ◽  
Molecular Imprinting ◽  
Intracellular Delivery ◽  
Enzyme Mimics ◽  
Molecularly Imprinted ◽  
Selective Catalysis ◽  
In Cells

Molecular imprinting of enzyme mimics allows delivery and selective catalysis and protection of the enzyme in cells.

Molecularly imprinted peptide-based enzyme mimics with enhanced activity and specificity

Soft Matter ◽  
2020 ◽  
Vol 16 (30) ◽  
pp. 7033-7039 ◽  
Author(s):  
Jingyi Li ◽  
Mingjie Zhu ◽  
Mengfan Wang ◽  
Wei Qi ◽  
Rongxin Su ◽  
...  
Keyword(s):  
Molecular Imprinting ◽  
Enzyme Mimics ◽  
Molecularly Imprinted ◽  
Peptide Assembly ◽  
Enhanced Activity

Peroxidase (POD)-mimicking catalysts with enhanced activity and specificity were constructed based on the strategy of peptide assembly and molecular imprinting.

Molecularly imprinted nanozymes with faster catalytic activity and better specificity

Nanoscale ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 4854-4863 ◽  
Author(s):  
Zijie Zhang ◽  
Yuqing Li ◽  
Xiaohan Zhang ◽  
Juewen Liu
Keyword(s):  
Activation Energy ◽  
Catalytic Activity ◽  
Molecular Imprinting ◽  
Selective Adsorption ◽  
Molecularly Imprinted ◽  
Product Release

Molecular imprinting accelerates nanozyme catalysis and improves specificity attributable to selective adsorption of imprinted substrate, decreasing activation energy and facilitating product release.

Precisely controlled molecular imprinting of glutathione-s-transferase by orientated template immobilization using specific interaction with an anchored ligand on a gold substrate

2014 ◽  
Vol 5 (16) ◽  
pp. 4764-4771 ◽  
Author(s):  
Yuri Kamon ◽  
Ryo Matsuura ◽  
Yukiya Kitayama ◽  
Tooru Ooya ◽  
Toshifumi Takeuchi
Keyword(s):  
Thin Films ◽  
Molecular Imprinting ◽  
Molecularly Imprinted Polymer ◽  
Specific Interaction ◽  
Specific Interactions ◽  
Synthetic Route ◽  
Gold Substrate ◽  
Imprinted Polymer ◽  
Glutathione S Transferase ◽  
Molecularly Imprinted

We demonstrate a novel synthetic route for molecularly imprinted polymer (MIP) thin films using a bottom-up approach utilizing protein–ligand specific interactions.

scholarly journals Monitoring of Irinotecan in Human Plasma: Sensitive Fluorescent Nanogels by Molecular Imprinting

2019 ◽  
Author(s):  
Martina Tommasini ◽  
Elena Pellizzoni ◽  
Valentina Iacuzzi ◽  
Elena Marangon ◽  
Paola Posocco ◽  
...  
Keyword(s):  
Amino Acids ◽  
Fluorescence Quenching ◽  
Human Plasma ◽  
Molecular Imprinting ◽  
Plasma Sample ◽  
Direct Detection ◽  
Fluorescent Nanoparticles ◽  
High Dilution ◽  
Molecularly Imprinted

A series of fluorescent molecularly imprinted nanogels to detect irinotecan (CPT11) were prepared and characterized. A set of amino acids and napthalimide polymerisable derivatives allowed to obtain polymers as soluble fluorescent nanoparticles by high dilution imprinted synthesis. The direct detection of irinotecan in human plasma was obtained by fluorescence quenching of the naphtalimide-based imprinted materials. The plasma sample treated with acetonitrile allowed the detection of irinotecan in the 10nM – 30μM range. The LOD was 9.4 nM, with within-run variability 10% and day to day variability 13%.<br>

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.

Fluorescence signaling molecularly imprinted polymers for antibiotics prepared via site-directed post-imprinting introduction of plural fluorescent reporters within the recognition cavity

2016 ◽  
Vol 4 (44) ◽  
pp. 7138-7145 ◽  
Author(s):  
Hirobumi Sunayama ◽  
Takeo Ohta ◽  
Atsushi Kuwahara ◽  
Toshifumi Takeuchi
Keyword(s):  
Molecular Imprinting ◽  
Molecularly Imprinted Polymers ◽  
Fluorescent Dyes ◽  
Specific Binding ◽  
Fluorescence Signal ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Fluorescent Reporters ◽  
Binding Event ◽  
Fluorescence Signaling

An antibiotic-imprinted cavity with two different fluorescent dyes was prepared by molecular imprinting and subsequent post-imprinting modifications (PIMs), for the readout of a specific binding event as a fluorescence signal.

scholarly journals Molecularly Imprinted Polymer Based Sensors for Medical Applications

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1279 ◽  
Author(s):  
Yeşeren Saylan ◽  
Semra Akgönüllü ◽  
Handan Yavuz ◽  
Serhat Ünal ◽  
Adil Denizli
Keyword(s):  
Surface Modification ◽  
Homeland Security ◽  
Molecular Imprinting ◽  
Molecularly Imprinted Polymer ◽  
Structural Changes ◽  
Low Cost ◽  
Dimensional Structure ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Physical And Chemical

Sensors have been extensively used owing to multiple advantages, including exceptional sensing performance, user-friendly operation, fast response, high sensitivity and specificity, portability, and real-time analysis. In recent years, efforts in sensor realm have expanded promptly, and it has already presented a broad range of applications in the fields of medical, pharmaceutical and environmental applications, food safety, and homeland security. In particular, molecularly imprinted polymer based sensors have created a fascinating horizon for surface modification techniques by forming specific recognition cavities for template molecules in the polymeric matrix. This method ensures a broad range of versatility to imprint a variety of biomolecules with different size, three dimensional structure, physical and chemical features. In contrast to complex and time-consuming laboratory surface modification methods, molecular imprinting offers a rapid, sensitive, inexpensive, easy-to-use, and highly selective approaches for sensing, and especially for the applications of diagnosis, screening, and theranostics. Due to its physical and chemical robustness, high stability, low-cost, and reusability features, molecularly imprinted polymer based sensors have become very attractive modalities for such applications with a sensitivity of minute structural changes in the structure of biomolecules. This review aims at discussing the principle of molecular imprinting method, the integration of molecularly imprinted polymers with sensing tools, the recent advances and strategies in molecular imprinting methodologies, their applications in medical, and future outlook on this concept.

Supercritical CO2-assisted synthesis of an ultrasensitive amphibious quantum dot-molecularly imprinted sensor

RSC Advances ◽  
2014 ◽  
Vol 4 (108) ◽  
pp. 63338-63341 ◽  
Author(s):  
A. Lourenço ◽  
R. Viveiros ◽  
A. Mouro ◽  
J. C. Lima ◽  
V. D. B. Bonifácio ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Molecular Recognition ◽  
Quantum Dot ◽  
Bisphenol A ◽  
Molecular Imprinting ◽  
Supercritical Co2 ◽  
Molecularly Imprinted ◽  
Low Concentrations

A green supercritical CO2-assisted molecular imprinting protocol enabled the production of smart sensory particles, incorporating quantum dots, with molecular recognition to bisphenol A at very low concentrations (4 nM).

scholarly journals Chiral separations of mandelic acid by HPLC using molecularly imprinted polymers

2005 ◽  
Vol 30 (4) ◽  
pp. 67-73 ◽  
Author(s):  
Chin-Yin Hung ◽  
Han-Hung Huang ◽  
Ching-Chiang Hwang
Keyword(s):  
Molecular Imprinting ◽  
Molecularly Imprinted Polymers ◽  
Mandelic Acid ◽  
Occupational Exposures ◽  
Bulk Polymerization ◽  
Chiral Separations ◽  
Phenyl Acetic Acid ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Chromatographic Resolution

Styrene is used in a variety of chemical industries. Environmental and occupational exposures to styrene occur predominantly through inhalation. The major metabolite of styrene is present in two enantiomeric forms, chiral R- and S- hydroxy-1-phenyl-acetic acid (R-and S-mandelic acid, MA). Thus, the concentration of MA, particularly of its enantiomers, has been used in urine tests to determine whether workers have been exposed to styrene. This study describes a method of analyzing mandelic acid using molecular imprinting techniques and HPLC detection to perform the separation of diastereoisomers of mandelic acid. The molecularly imprinted polymer (MIP) was prepared by non-covalent molecular imprinting using (+) MA, (-) MA or (+) phenylalanine, (-) phenylalanine as templates. Methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) were copolymerized in the presence of the template molecules. The bulk polymerization was carried out at 4ºC under UV radiation. The resulting MIP was grounded into 25~44¼m particles, which were slurry packed into analytical columns. After the template molecules were removed, the MIP-packed columns were found to be effective for the chromatographic resolution of (±)-mandelic acid. This method is simpler and more convenient than other chromatographic methods.

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