Sandwich Hybridization
Sandwich Hybridization - Related Videos
06:50
Sandwich-like Microenvironments to Harness Cell/Material Interactions
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Cited by 3 •
2015
The following protocol describes the procedure to assemble sandwich-like cultures to be used as an intermediate stage between bi-dimensional (2D) and three-dimensional (3D) cellular environments. The engineered systems can have applications in microscopy, biomechanics, biochemistry and cell biology assays.
14:22
ELISA Assays: Indirect, Sandwich, and Competitive
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2023
Source: Whitney Swanson1,2, Frances V. Sjaastad2,3, and Thomas S. Griffith1,2,3,4 1 Department of Urology, University of Minnesota, Minneapolis, MN 55455 2 Center for Immunology, University of Minnesota, Minneapolis, MN 55455 3 Microbiology, Immunology, and Cancer Biology Graduate Program, University of Minnesota, Minneapolis, MN 55455 4 Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455 Enzyme-linked immunosorbent assay (ELISA) is frequently used to measure the presence...
10:44
Snap Chip for Cross-reactivity-free and Spotter-free Multiplexed Sandwich Immunoassays
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Cited by 3 •
2017
We demonstrate a snap chip technology for performing cross-reactivity-free multiplexed sandwich immunoassays by simply snapping two slides. A snap apparatus is used for reliably transferring reagents from microarray-to-microarray. The snap chip can be used for any biochemical reactions requiring colocalization of different reagents without cross-contamination.
12:15
In Situ Hybridization for the Precise Localization of Transcripts in Plants
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Cited by 65 •
2011
The in situ hybridization protocol described here allows a direct localization of mRNA and small RNA expression at the cellular level with high sensitivity and specificity. The procedure is optimized for paraffin-embedded plant tissue sections, is applicable to a wide range of plants and tissues, and can be completed within ten days.
03:35
Hybridization of Atomic Orbitals II
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2020
sp3d and sp3d 2 Hybridization To describe the five bonding orbitals in a trigonal bipyramidal arrangement, we must use five of the valence shell atomic orbitals (the s orbital, the three p orbitals, and one of the d orbitals), which gives five sp3d hybrid orbitals. With an octahedral arrangement of six hybrid orbitals, we must use six valence shell atomic orbitals (the s orbital, the three p orbitals, and two of the d orbitals in its valence shell), which gives six sp3d 2 hybrid orbitals.
FAQs
The two-probe arrangement increases sequence selectivity because detection depends on complementary binding at two regions of the same DNA or RNA target. A capture probe positions the target on a solid surface, while a labeled probe confirms binding at a second site. This paired recognition helps distinguish the intended sequence and produces a signal linked to target abundance.
The immobilized probe provides physical retention of the target, allowing the assay to organize molecular recognition on a solid surface. The second probe supplies the detectable label after binding another complementary region. Separating capture from signal generation makes the design modular, so probe sequences and detection platforms can be adapted for different nucleic acid targets.
Complementary base pairing is the central determinant of selectivity. Probe sequences must recognize appropriate regions of the target so that both binding events support formation of the intended probe–target–probe complex. Target sequence choice therefore affects which DNA or RNA molecules are detected, while the label and signal platform determine how that recognition becomes measurable.
A typical workflow begins by immobilizing the capture probe on a solid surface, followed by introducing the DNA or RNA sample so a matching target can bind. The labeled probe is then provided to recognize a second target region. Finally, the label generates a measurable signal, which is interpreted in relation to the target present.
Its modular structure allows researchers to change the probe sequences while retaining the general capture-and-detection strategy. Signal generation can also be paired with different detection platforms. This flexibility supports sequence-specific biosensors, diagnostic assays, and molecular analysis, where the desired target sequence and readout method may vary across bioengineering designs.
The assay produces a signal that is proportional to the amount of target nucleic acid present, allowing detection to be connected with target abundance. Because recognition depends on complementary sequences, the result also carries sequence-specific information. In bioengineering, these combined features support analysis of selected DNA or RNA targets in sensor and diagnostic formats.