Viral Rna Transcription
Viral Rna Transcription - Related Videos
09:35
Using Click Chemistry to Measure the Effect of Viral Infection on Host-Cell RNA Synthesis
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Cited by 15 •
2013
This method describes the use of click chemistry to measure changes in host cell transcription after infection with the Rift Valley fever virus (RVFV) strain MP-12. Results can be visualized qualitatively via fluorescence microscopy or obtained quantitatively through flow cytometry. This method is adaptable for use with other viruses.
04:08
Real-Time Quantitative Reverse Transcription PCR for Diagnosing Viral Infections
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2025
This video demonstrates a quantitative method for detecting viral infection using real-time reverse transcription PCR. The reverse transcription step converts the RNA to cDNA, which is then amplified via PCR cycles. The presence of viral RNA in the sample is confirmed by analyzing the amplification and dissociation curves of DNA obtained from the PCR.
02:27
Measuring Hepatitis C Viral Load Using Quantitative Reverse Transcription Polymerase Chain Reaction
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2026
Source: Ren, S., et al. A Protocol for Analyzing Hepatitis C Virus Replication. J. Vis. Exp. (2014).This video demonstrates the procedure for quantifying Hepatitis C viral RNA using quantitative reverse transcription PCR to measure viral load in infected cell cultures.
10:16
Detection of Viral RNA by Fluorescence in situ Hybridization (FISH)
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Cited by 35 •
2012
A fluorescence in situ hybridization (FISH) method was developed to visually detect viral genomic RNA using fluorescence microscopy. A probe is made with specificity to the viral RNA that can then be identified using a combination of hybridization and immunofluorescence techniques. This technique offers the advantage of identifying the localization of the viral RNA or DNA at steady-state, providing information on the control of intracellular virus trafficking events.
02:59
Extraction of Viral RNA from Surface-Bound Virions Using a Silica Spin Column
0 Views •
2026
Source: Klaus, J. P. et al. Highly Sensitive Assay for Measurement of Arenavirus-cell Attachment. J. Vis. Exp. (2016)This video demonstrates the extraction of viral RNA from surface-bound virions on epithelial cells using silica spin columns. The method includes chemical lysis, RNA stabilization, and membrane-based purification for downstream quantification of virus-cell attachment.
FAQs
The genome influences whether transcription depends on a host RNA polymerase or on a virus-encoded RNA-dependent RNA polymerase. Viral polymerases copy RNA templates into complementary strands, while genome organization can also support production of subgenomic messenger RNAs for individual proteins. This distinction helps explain why transcription strategies differ among viruses.
Replication complexes provide specialized sites where RNA synthesis occurs and where polymerase activity can be coordinated with the viral genome. Their function is influenced by genome structure, polymerase performance, and conditions within the host cell. Examining these factors helps researchers understand how efficiently viral RNA is produced during infection.
Complementary RNA strands provide templates or products needed to continue viral RNA synthesis, depending on the genome and transcription strategy. Subgenomic messenger RNAs can allow individual viral proteins to be expressed from a larger viral genome. This arrangement connects RNA production with the timing and organization of viral gene expression.
A conceptual analysis can follow the process from the viral genome and its structure to the polymerase responsible for copying RNA, the replication complex where synthesis occurs, and the RNA products generated. Researchers can then relate those products to messenger RNA production, viral protein expression, and changes caused by host-cell conditions.
Viral polymerases and RNA synthesis are potential antiviral targets because disrupting either can interfere with production of viral RNA and gene-expression products. Research may therefore examine polymerase activity, template copying, or the conditions supporting replication complexes. These studies can identify points where treatment might limit infection progression without needing to describe every viral component.
RNA production helps determine how an infection progresses and how viral genes are expressed inside infected cells. The process is also connected to innate immune responses, which can be triggered as infected cells encounter viral RNA or related replication activity. Studying these links clarifies how viral replication and host defense influence one another.