Electronic Transduction of Polymerase or Reverse Transcriptase Induced Replication Processes on Surfaces: Highly
Fernando Patolsky1, Amir Lichtenstein1, Moshe Kotler2
1Institute of Chemistry The Hebrew University of Jerusalem Jerusalem 91904 (Israel) Fax: (+972) 2-6527715.
Angewandte Chemie (International Ed. in English)
|May 2, 2018
Summary
This study presents a novel method for ultrasensitive detection of viral genomes using enzyme-linked DNA/RNA replication and electronic transduction. This approach amplifies target DNA for highly specific and sensitive analysis.
Area of Science:
- Biotechnology
- Molecular Biology
- Biosensors
Background:
- Accurate detection of viral genomes is crucial for diagnostics.
- Existing methods may lack the required sensitivity or specificity.
- Novel amplification and detection strategies are needed.
Purpose of the Study:
- To develop an ultrasensitive method for specific electronic transduction of viral genomes.
- To utilize enzyme-catalyzed precipitation for signal amplification.
- To enable highly sensitive DNA analysis.
Main Methods:
- DNA/RNA replication induced by polymerase or reverse transcriptase on a transducer.
- Biotin-avidin-alkaline phosphatase conjugation for signal tagging.
- Enzyme biocatalysis of substrate leading to product precipitation on the transducer.
Main Results:
- Ultrasensitive and specific electronic transduction of viral genomes achieved.
- Signal amplification through enzyme-catalyzed precipitation demonstrated.
- Successful analysis of target DNA with high sensitivity.
Conclusions:
- The developed method offers a highly sensitive platform for viral genome detection.
- Enzyme-linked replication and precipitation provide effective signal amplification.
- This approach holds promise for advanced molecular diagnostics.
Related Concept Videos
02:31Chromosome Replication
10.8K
Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins. This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously. Certain nucleotides can act as origins of replication, but these sequences are not well defined - especially in complex, multi-cellular, eukaryotic species. The length of DNA that spans an origin...
10.8K
01:14Reversible and Irreversible Processes
5.8K
The thermodynamic processes can be classified into reversible and irreversible processes. The processes that can be restored to their initial state are called reversible processes. It is only possible if the process is in quasi-static equilibrium, i.e., it takes place in infinitesimally small steps, and the system remains at equilibrium However, these are ideal processes and do not occur naturally. An ideal system undergoing a reversible process is always in thermodynamic equilibrium within...
5.8K
01:16Viral Replication: Lysogenic Cycle
1.7K
The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
1.7K
01:20Viral Replication: Lytic Cycle
1.7K
Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
1.7K
02:35Replication in Prokaryotes
99.1K
Overview
99.1K
00:36Viral Mutations
40.0K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
40.0K