Article ; Online: Aptamer-Modified Homogeneous Catalysts, Heterogenous Nanoparticle Catalysts, and Photocatalysts: Functional "Nucleoapzymes", "Aptananozymes", and "Photoaptazymes".
Advanced materials (Deerfield Beach, Fla.)
2023 Volume 36, Issue 10, Page(s) e2210885
Abstract: Conjugation of aptamers to homogeneous catalysts ("nucleoapzymes"), heterogeneous nanoparticle catalysts ("aptananozymes"), and photocatalysts ("photoaptazymes") yields superior catalytic/photocatalytic hybrid nanostructures emulating functions of native ...
Abstract | Conjugation of aptamers to homogeneous catalysts ("nucleoapzymes"), heterogeneous nanoparticle catalysts ("aptananozymes"), and photocatalysts ("photoaptazymes") yields superior catalytic/photocatalytic hybrid nanostructures emulating functions of native enzymes and photosystems. The concentration of the substrate in proximity to the catalytic sites ("molarity effect") or spatial concentration of electron-acceptor units in spatial proximity to the photosensitizers, by aptamer-ligand complexes, leads to enhanced catalytic/photocatalytic efficacies of the hybrid nanostructures. This is exemplified by sets of "nucleoapzymes" composed of aptamers conjugated to the hemin/G-quadruplex DNAzymes or metal-ligand complexes as catalysts, catalyzing the oxidation of dopamine to aminochrome, oxygen-insertion into the Ar─H moiety of tyrosinamide and the subsequent oxidation of the catechol product into aminochrome, or the hydrolysis of esters or ATP. Also, aptananozymes consisting of aptamers conjugated to Cu |
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MeSH term(s) | Photosensitizing Agents ; Dopamine ; Ligands ; Gold ; Metal Nanoparticles ; Oligonucleotides ; Catalysis ; Indolequinones |
Chemical Substances | aminochrome 1 (39984-17-3) ; Photosensitizing Agents ; Dopamine (VTD58H1Z2X) ; Ligands ; Gold (7440-57-5) ; Oligonucleotides ; Indolequinones |
Language | English |
Publishing date | 2023-04-21 |
Publishing country | Germany |
Document type | Journal Article |
ZDB-ID | 1474949-X |
ISSN | 1521-4095 ; 0935-9648 |
ISSN (online) | 1521-4095 |
ISSN | 0935-9648 |
DOI | 10.1002/adma.202210885 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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