Rna Probe Hybridization
Rna Probe Hybridization - Related Videos
03:26
Probe Hybridization and Signal Amplification in RNA In Situ Hybridization: A Technique for Detecting Specific RNA Sequences in Tissue Sections
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2023
This video describes a sequential hybridization strategy that involves hybridizing mRNA probes to specific target mRNA. Following probe hybridization, signal amplification is performed to enhance resolution via reduction of signal-to-noise ratio during RNA-CISH of histological samples.
06:08
In Situ Hybridization Using Oligonucleotide Probes to Study RNA Expression in Rat Brain Sections
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2025
This video demonstrates the detection of serotonin receptor RNA synthesis using oligonucleotide probes in rat brain tissue affected by serotonin syndrome. The protocol includes tissue pretreatment, probe hybridization, and enzymatic detection to visualize and quantify serotonin receptor RNA expression under a microscope.
09:57
Whole Mount RNA Fluorescent in situ Hybridization of Drosophila Embryos
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Cited by 22 •
2013
Here we describe a whole-mount fluorescent in situ hybridization (FISH) protocol for determining the expression and localization properties of RNAs expressed during embryogenesis in the fruit fly, Drosophila melanogaster.
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.
16:42
Generation of RNA/DNA Hybrids in Genomic DNA by Transformation using RNA-containing Oligonucleotides
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Cited by 4 •
2010
This work shows how to form an RNA/DNA hybrid at the chromosomal level and reveal transfer of genetic information from RNA to genomic DNA in yeast cells.
FAQs
Hybridization stringency determines how selectively a probe binds its target. Higher stringency conditions, created by adjusting temperature and salt concentration, favor interactions with closely complementary sequences and help reject less-matched ones. Lower stringency permits broader binding. Researchers therefore tune these variables when the goal is to distinguish related transcripts rather than simply detect a shared sequence.
Probe length is one of the variables that controls hybridization stringency. Along with temperature and salt concentration, it influences how effectively the assay distinguishes closely related RNA sequences. Researchers therefore choose probe length together with the desired selectivity, rather than treating it as an isolated design feature, when interpreting sequence-specific detection results.
Labeling converts a sequence-specific binding event into a detectable molecular signal. Once the complementary probe associates with its target, the label allows researchers to identify where the target is present or estimate its relative abundance, depending on the assay format. This link between recognition and readout makes sequence-specific RNA analysis experimentally useful.
The core workflow starts with a probe designed to be complementary to the RNA sequence of interest and carrying a detectable label. The probe is then applied in a chosen detection format, such as in situ hybridization, Northern blotting, or an RNA detection assay. Researchers adjust temperature, salt, and probe length to control selectivity.
In situ hybridization is suited to determining where a transcript occurs within cells or tissues, whereas Northern blotting is used to assess transcript abundance. RNA detection assays can reveal sequence-specific expression patterns more generally. Choosing among these formats depends on whether the main outcome is spatial localization, abundance, or an expression pattern.
Results from these assays can connect RNA signals with biological function. In developmental studies, localization or expression patterns can show where transcripts are associated with particular biological contexts; in disease research, they can support investigation of disease mechanisms. The same sequence-specific principle also enables pathogen detection and studies of gene regulation.