Replicon
Replicon - Related Videos
06:28
Immunofluorescence to Monitor the Cellular Uptake of Human Lactoferrin and its Associated Antiviral Activity Against the Hepatitis C Virus
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Cited by 9 •
2015
The human lactoferrin (hLF) is a component of the immune system. In this study, immunofluorescence assays are used to demonstrate both the hepatocellular uptake of hLF and a qualitative reduction in the hepatitis C virus replication upon treatment with hLF.
02:31
Chromosome Replication
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2020
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 of...
03:27
Preparing Cells to Analyze Intracellular Uptake and Activity of an Antiviral Agent
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2026
Source: Allaire, A., et al. Immunofluorescence to Monitor the Cellular Uptake of Human Lactoferrin and its Associated Antiviral Activity Against the Hepatitis C Virus. J. Vis. Exp. (2015).The video demonstrates the procedure for preparing cells to assess the intracellular uptake and activity of an antiviral agent against the hepatitis C virus.
16:49
Two Methods of Heterokaryon Formation to Discover HCV Restriction Factors
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2012
We describe two methods for conditional trans-complementation of hepatitis C virus (HCV) assembly and the completion of the full viral life cycle, which rely on heterokaryon formation. These techniques are suitable to screen for cell lines that express dominant restriction factors, which preclude production of infectious HCV progeny.
13:04
A Protocol for Analyzing Hepatitis C Virus Replication
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Cited by 2 •
2014
Hepatitis C Virus (HCV) is a major human pathogen that causes liver disorders, including cirrhosis and cancer. An HCV infectious cell culture system is essential for understanding the molecular mechanism of HCV replication and developing new therapeutic approaches. Here we describe a protocol to investigate various stages of the HCV replication cycle.
FAQs
Replication starts at a defined origin, where initiator proteins recognize a specific site and organize the early replication machinery. Enzymes then unwind the nucleic acid and copy its template, producing new genetic molecules. This sequence links origin recognition to template duplication, so changes in initiation or unwinding can directly influence whether replication proceeds effectively.
Initiator proteins connect the origin of replication with the enzymes needed to copy the genetic template. Their recognition of the origin establishes where replication begins, while subsequent recruitment supports nucleic-acid unwinding and synthesis of new molecules. The mechanism therefore depends on coordinated recognition and enzyme recruitment rather than template copying alone.
In bacteria, a plasmid can function as a replicon independently of the chromosome. This provides a direct contrast between plasmid and chromosomal genetic material: both can be discussed in terms of origins, initiator proteins, and template copying, but the plasmid represents a separate genetic unit rather than the bacterial chromosome itself. This comparison helps analyze genome organization.
Viral replicons may preserve the genes required for replication while lacking genes needed to produce complete infectious particles. This division separates genome copying from particle production. As a result, such systems can support investigation of viral replication and gene expression while excluding the full genetic program required for complete infectious particle production.
Replicon-based systems provide experimental frameworks for examining DNA replication, genome organization, and gene expression. In viral biology, they help focus attention on replication-related functions separately from genes required for complete particle production. Their value is comparative: researchers can study how genetic material is copied and expressed across chromosomal, plasmid, and viral contexts.
These systems are relevant to biotechnology because a defined, autonomously replicating unit can be analyzed as a genetic module. Examining its origin, initiator proteins, and associated replication enzymes connects molecular mechanism with genome organization and gene expression. The same framework supports interpretation of plasmid behavior and viral replicon systems in applied biological research.