Spatial Oxygen Control
Spatial Oxygen Control - Related Videos
11:49
Quantitative and Temporal Control of Oxygen Microenvironment at the Single Islet Level
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Cited by 10 •
2013
Microfluidic oxygen control confers more than just convenience and speed over hypoxic chambers for biological experiments. Especially when implemented via diffusion through a membrane, microfluidic oxygen can provide simultaneous liquid and gas phase modulations at the microscale-level. This technique enables dynamic multi-parametric experiments critical for studying islet pathophysiology.
07:48
Spatial and Temporal Control of T Cell Activation Using a Photoactivatable Agonist
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Cited by 5 •
2018
This protocol describes an imaging-based method to activate T lymphocytes using photoactivatable peptide-MHC, enabling precise spatiotemporal control of T cell activation.
07:51
Spatial Cueing
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Attention refers to the limited human ability to select some information for processing at the expense of other stimuli in the environment. Attention operates in all sensory modalities: vision, hearing, touch, even taste and smell. It is most often studied in the visual domain though. A common way to study visual attention is with a spatial cueing paradigm. This paradigm allows researchers to measure the consequences of focusing...
06:44
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
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Cited by 1 •
2023
Oxide materials show many exotic properties that can be controlled by tuning the oxygen content. Here, we demonstrate the tuning of oxygen content in oxides by varying the pulsed laser deposition parameters and by performing postannealing. As an example, electronic properties of SrTiO3-based heterostructures are tuned by growth modifications and annealing.
08:52
Spatial Molecular Imaging of the Glycome Using Mass Spectrometry
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Cited by 1 •
2025
This protocol details the key steps to enable rigorous and reproducible measurement of both glycogen and N-linked glycans using mass spectrometry imaging.
FAQs
Local oxygen conditions emerge from the balance between oxygen entry and restriction. Oxygen-permeable materials allow oxygen to diffuse into selected regions, whereas oxygen-limiting materials reduce or constrain that movement. When paired with controlled gas delivery, these materials can create neighboring areas with different concentrations, making it possible to examine cellular responses to location-specific oxygen availability.
Gas delivery sets the oxygen supply, while chemical oxygen scavengers remove oxygen from chosen regions. Microscale fluidic designs add spatial control by guiding fluids through small, defined paths. Combining these approaches helps establish and maintain concentration differences rather than relying on a single uniform condition, which is important when an experiment requires stable local hypoxia.
Uniform cultures expose cells to broadly similar oxygen conditions, whereas gradients reproduce the local variation found in biological environments. This difference can reveal oxygen-dependent signaling, metabolism, and cell behavior that may be hidden under uniform exposure. As a result, spatially organized systems can provide a more realistic basis for studying tissue and disease processes.
Researchers first identify the biological region or gradient they want to model, then select oxygen-permeable or oxygen-limiting materials and a control strategy. Gas delivery, chemical scavengers, or microscale fluidics can be combined to shape diffusion. The resulting setup supports comparisons between cells exposed to different local oxygen concentrations within one biological system.
These systems can model tissue oxygenation, development, and engineered tissue environments by creating oxygen conditions that vary by location. That spatial organization makes models more realistic than uniform culture conditions, helping researchers examine how oxygen availability influences cells during tissue formation or when designing biological constructs.
Tumor microenvironments and wounds often contain locally different oxygen conditions, so spatial oxygen control can reproduce those differences in experimental models. Researchers can then investigate oxygen-dependent signaling, metabolism, and cell behavior under more relevant conditions, while also using the systems for disease research and evaluation of potential treatments.
Applications extend to host-microbe interactions and engineered tissue design, where neighboring biological components may experience different oxygen availability. By controlling those local conditions, researchers can assess how oxygen shapes interactions, cellular activity, or tissue behavior. The same framework also supports drug evaluation when responses depend on the oxygen environment rather than on a uniform culture condition.