Hybridization Wash Procedure
Hybridization Wash Procedure - Related Videos
03:02
Urine Depletion and Bladder Rinsing in Mouse Model: A Catheter-based Procedure to Empty and Wash Murine Urinary Bladder
0 Views •
2023
In this video, we describe a catheter-based procedure to empty and rinse the urinary bladder of a mouse model. The prepped mouse can then be used for further experimental procedures.
00:52
Washing, Drying, and Ignition of Precipitates
0 Views •
2024
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
08:00
Whole-Mount In Situ Hybridization
0 Views •
2023
Whole-mount in situ hybridization (WMISH) is a common technique used for visualizing the location of expressed RNAs in embryos. In this process, synthetically produced RNA probes are first complementarily bound, or "hybridized," to the transcripts of target genes. Immunohistochemistry or fluorescence is then used to detect these RNA hybrids, revealing spatial and temporal patterns of gene expression. Unlike traditional in situ hybridization techniques, which require thin tissue sections whose...
03:53
FFPE Tissue Pretreatment for RNA CISH: A Procedure to Process Formalin-Fixed Paraffin-Embedded Tissue Sections for RNA Chromogenic In Situ Hybridization
0 Views •
2023
This video demonstrates the steps involved in the pretreatment of FFPE tissue specimens for RNA chromogenic in situ hybridization. The pretreatment process helps maintain nucleic acid integrity within the cells and overall tissue morphology.
06:46
Pulsed Laser Diode-Based Desktop Photoacoustic Tomography for Monitoring Wash-In and Wash-Out of Dye in Rat Cortical Vasculature
0 Views •
Cited by 9 •
2019
A compact pulsed laser diode-based desktop photoacoustic tomography (PLD-PAT) system is demonstrated for high-speed dynamic in vivo imaging of small animal cortical vasculature.
FAQs
Wash stringency determines which probe-target duplexes remain attached. Raising temperature or lowering ionic strength makes duplex retention more demanding, so mismatched pairings are destabilized more readily than fully complementary pairings. Lower-stringency conditions retain more duplexes but may permit nonspecific binding, whereas higher stringency improves sequence discrimination and reduces background.
Temperature and ionic strength are the main controllable conditions that influence duplex stability during washing. Their combined adjustment changes how selectively the procedure removes probe molecules associated with imperfect matches. Because different conditions can alter both retained signal and nonspecific background, researchers must control these variables consistently when comparing samples or interpreting detection results.
Excessive stringency can remove probe-target duplexes that should contribute to detection, reducing the observed signal along with unwanted binding. The useful operating range therefore balances two outcomes: retaining fully complementary interactions while eliminating mismatched or unbound probes. This balance matters because a clean result is valuable only if the target remains detectable.
The procedure begins after hybridization, when the sample contains both probe-target duplexes and unbound or nonspecifically bound probes. Researchers expose the sample to one or more wash solutions under controlled temperature and ionic-strength conditions. These washes remove unwanted probe associations while preserving sufficiently stable duplexes for subsequent signal detection and interpretation.
Optimization requires adjusting wash conditions so that nonspecific signal decreases without eliminating the probe-target duplexes of interest. Temperature and ionic strength provide the principal controls, and their effects should be evaluated through the resulting balance between signal strength and background. The selected conditions should also remain consistent across samples to support reliable comparisons.
Hybridization wash procedures support Southern blotting, Northern blotting, microarrays, and in situ hybridization. In these settings, effective washing improves the specificity of signals used to assess whether a DNA or RNA sequence is present. In situ hybridization additionally benefits from the ability to interpret where the target is detected within the examined biological material.