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gold nanoparticles labeled streptavidin - Gold nanoparticles labeled...

Thu, 23 Dec 2021 01:21:45 GMT

gold nanoparticles labeled streptavidin - Gold nanoparticles labeled stretavidin can bind to trace antigens, antibodies and receptors, and has a wide range of applications in biological detection and biosensors. Biotin-linked streptavidin can be applied to nano-gold technology. The principle is that positively charged streptavidin is labeled with negatively charged gold nanorods-streptavidin and gold nanoparticles-streptavidin, and then tightly bound to biotin together. This allows the detection signal to be amplified on the basis of only nano-gold labels or only biotin labels.

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gold nanoparticles labeled Rna - In recent years, the use of functionalized...

Thu, 23 Dec 2021 01:21:43 GMT

gold nanoparticles labeled Rna - In recent years, the use of functionalized gold nanoparticles has enabled sensitive detection of nucleic acids, small molecules, and cells. These tests are based on the “cross-linking aggregation” method, which uses the interaction between the modified ligand (RNA or DNA) on the surface of the functionalized gold nanoparticles and the target analyte to overcome the repulsive force between the particles to aggregate. Because the color of gold nanoparticles is more sensitive to aggregation, the target analyte can be detected by observing the color change.

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gold nanoparticles labeled protein - There are multiple modes of interaction...

Thu, 23 Dec 2021 01:21:41 GMT

gold nanoparticles labeled protein - There are multiple modes of interaction between gold nanoparticles and proteins, including physical adsorption, chemical covalent binding, and non-covalent specific adsorption. Click chemistry can covalently connect gold nanoparticles and proteins, or catalyze the reaction between nanoparticles, to obtain reaction results that can be read with the naked eye. The interaction between gold nanoparticles and proteins and the spectral properties of gold nanoparticles can be used for simple, efficient and low-cost detection of disease or environmental pollution, as well as for disease treatment.

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gold nanoparticles labeled dna - Because gold nanoparticles have the...

Thu, 16 Sep 2021 05:42:14 GMT

gold nanoparticles labeled dna - Because gold nanoparticles have the properties of surface plasmon resonance spectroscopy, in the construction of DNA analysis and detection, they have the advantage of being able to convert a biometric reaction into an amplified optical or electrical signal. Therefore, the combination of nano-gold and DNA is used to detect the bases, single strands and oligonucleotides of DNA. Using nanoparticles as tags to detect DNA is an interesting alternative to standard fluorescence techniques. This method has simple detection equipment, high stability and low cost.

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