Rna Editing Detection
Rna Editing Detection - Related Videos
08:50
A Nonsequencing Approach for the Rapid Detection of RNA Editing
0 Views •
2022
Rapid detection and reliable quantification of RNA editing events at a genomic scale remain challenging and currently rely on direct RNA sequencing methods. The protocol described here uses microtemperature gradient gel electrophoresis (µTGGE) as a simple, quick, and portable method of detecting RNA editing.
02:23
RNA Editing
0 Views •
2020
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
09:19
RNA Catalyst as a Reporter for Screening Drugs against RNA Editing in Trypanosomes
0 Views •
Cited by 1 •
2014
A highly sensitive ribozyme-based assay, applicable to high-throughput screening of chemicals targeting the unique process of RNA editing in trypanosomatid pathogens, is described in this paper. Inhibitors can be used as tools for hypothesis-driven analysis of the RNA editing process and ultimately as therapeutics.
08:31
Genome Editing
0 Views •
2023
A well-established technique for modifying specific sequences in the genome is gene targeting by homologous recombination, but this method can be laborious and only works in certain organisms. Recent advances have led to the development of “genome editing”, which works by inducing double-strand breaks in DNA using engineered nuclease enzymes guided to target genomic sites by either proteins or RNAs that recognize specific sequences. When a cell attempts to repair this damage, mutations can be...
02:42
RNA CISH Signal Detection: A Technique to Detect Chromogenic Signals During RNA In Situ Hybridization in Intact Tissue Specimens
0 Views •
2023
This video presents the protocol for signal detection during RNA chromogenic in situ hybridization. This technique can be used to diagnose an active oncogenic infection visually in an intact tissue specimen.
FAQs
A candidate editing site becomes more credible when RNA evidence is separated from DNA-level variation and technical artifacts. In genetic studies, comparing RNA evidence with the matched genomic sequence helps determine whether a mismatch reflects a post-transcriptional event. Linking recurrent sites to adenosine or cytidine deaminases can further support a mechanistic interpretation and connect editing with altered gene output.
An inherited genomic variant is already encoded in DNA, so it can appear as an RNA-DNA mismatch without representing post-transcriptional editing. Matched genomic DNA provides the reference needed to distinguish these possibilities. Filtering inherited variants alongside sequencing errors, misalignment, and low-quality data reduces false candidates and makes downstream genetic conclusions more reliable.
Read quality, accurate alignment, and careful handling of candidate mismatches strongly influence the result. Low-quality sequencing data or misalignment can create differences that resemble editing, while insufficient filtering can retain technical artifacts. Evaluating these factors is essential when comparing editing patterns among tissues, developmental stages, or disease states, where apparent differences may otherwise be misleading.
A typical workflow begins with high-throughput RNA sequencing and matched genomic DNA, followed by comparison of RNA reads with the DNA template. Candidate mismatches are then filtered to remove inherited variants, sequencing errors, misalignment, and low-quality observations. Finally, site-specific assays can confirm selected candidates, strengthening evidence for genuine editing events.
High-throughput sequencing can survey many RNA-DNA differences across the transcriptome, whereas site-specific assays focus confirmation on selected candidates. This complementary approach helps test whether an observed mismatch persists outside the initial sequencing analysis. Confirmed sites provide a stronger basis for examining editing patterns, associating them with deaminases, and evaluating possible effects on gene regulation or protein production.
The results can show how editing patterns vary across tissues, developmental stages, or disease states. They also help researchers connect RNA changes with transcript diversity, gene regulation, and protein production. When candidate sites are associated with adenosine or cytidine deaminases, the analysis can further support studies of enzyme-linked regulation and disease mechanisms.