Amber Suppression Technology
Amber Suppression Technology - Related Videos
08:34
The Measurement and Treatment of Suppression in Amblyopia
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Cited by 54 •
2012
Amblyopia is a developmental disorder of the visual cortex that is often accompanied by strong suppression of one eye. We present a new technique for measuring and treating interocular suppression in patients with amblyopia that can be deployed using virtual reality goggles or a portable iPod Touch device.
04:29
Visualizing Transcriptional Suppression in Virus-Infected Cells
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2026
Source: Kalveram, B. et al. Using Click Chemistry to Measure the Effect of Viral Infection on Host-Cell RNA Synthesis. J. Vis. Exp. (2013)This video demonstrates the use of click chemistry and fluorescence microscopy to visualize nascent RNA transcription in mammalian cells. It highlights how viral infection suppresses host transcription by comparing fluorescent signals between infected and control cells.
14:01
Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
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2011
Tregs are potent suppressors of the immune system. There is a lack of unique surface markers to define them, hence, definitions of Tregs are primarily functional. Here we describe an optimized in vitro assay capable of identifying immune imbalance in subjects at risk to develop T1D.
03:35
Analysis of Virus-Induced Host Transcriptional Suppression Using Flow Cytometry
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2026
Source: Kalveram, B., et al. Using Click Chemistry to Measure the Effect of Viral Infection on Host-Cell RNA Synthesis. J. Vis. Exp. (2013)This video demonstrates the use of click chemistry and flow cytometry to measure virus-induced suppression of host-cell transcription. Mammalian cells are infected with a virus that expresses a nuclear virulence protein disrupting the host transcription factor complex, while control cells remain transcriptionally active. Incorporation of 5-ethynyl uridine...
01:26
Technological Change
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2024
Total Factor Productivity (TFP) measures the efficiency with which inputs are transformed into outputs in production. It is the essence of economic growth, driven by technological advancement. Consider the agricultural sector, where production requires vast amounts of human labor and work animals. Today, modern farm machinery and agriculture technologies have revolutionized how we cultivate crops and produce food much more efficiently. TP = A*f(K, L) TFP is represented as a multiplier 'A' in...
FAQs
The engineered transfer RNA and its matching aminoacyl-tRNA synthetase function as a paired recognition system. The synthetase loads the transfer RNA with the selected noncanonical amino acid, while the engineered transfer RNA reads UAG at the programmed protein position. This pairing redirects that codon from translation termination toward amino-acid incorporation, enabling controlled modification at one site.
It supplies the chemical or structural feature that researchers want to place at one predetermined protein position. Because the incorporation site is specified genetically through UAG, changing the selected amino acid can alter local properties of the resulting protein in a controlled way. This makes the system useful for probing how a particular site contributes to protein behavior.
The engineered transfer RNA alone is not sufficient; it must be paired with a matching aminoacyl-tRNA synthetase that recognizes and loads the intended noncanonical amino acid. Their coordinated action links codon recognition to amino-acid selection. This defined pairing allows researchers to control both where incorporation occurs and which chemical or structural feature is introduced there.
A conceptual workflow begins by selecting a protein position for reassignment, placing UAG at that position, and introducing the engineered transfer RNA with its matching synthetase. The selected noncanonical amino acid is then incorporated during protein production. Researchers can examine the modified protein for labeling, activation or inactivation, or other functional consequences relevant to the experiment.
A label-bearing noncanonical amino acid can be directed to a predetermined site rather than incorporated without positional control. The resulting protein carries the label where the researcher chose to place UAG, supporting analysis of proteins involved in immune recognition or infection-related processes. Site specificity also helps researchers relate observed protein behavior to a particular structural position.
By placing a selected noncanonical amino acid at a defined site, researchers can impose a designed chemical or structural change on the protein. Comparing proteins with different site-specific modifications can reveal whether that position contributes to activation or loss of function. In immunology and infection studies, this provides a controlled way to examine protein roles.
In immunology and infection research, the method can be applied to pathogen proteins and host proteins involved in immune recognition and disease. Site-specific chemical and structural control helps distinguish how individual protein features contribute to host-pathogen interactions. The resulting functional information can support investigation of disease mechanisms and identification of potential therapeutic targets.