Light-patterned Degradation
Light-patterned Degradation - Related Videos
03:07
Targeted Bacterial Colony Isolation Using Light-Patterned Hydrogel Degradation
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2025
Source: Fattahi, N., et al. Photodegradable Hydrogel Interfaces for Bacteria Screening, Selection, and Isolation. J. Vis. Exp. (2021).This video demonstrates the extraction of bacterial colonies from a photodegradable hydrogel using UV light. A specific colony is selected, and a patterned light exposure is designed to initiate localized hydrogel degradation. After adjusting light intensity and duration, the UV light is applied, releasing the colony. The colony is then aspirated through tubing...
10:45
Light-mediated Formation and Patterning of Hydrogels for Cell Culture Applications
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Cited by 26 •
2016
We describe a sequential process for light-mediated formation and subsequent biochemical patterning of synthetic hydrogel matrices for three-dimensional cell culture applications. The construction and modification of hydrogels with cytocompatible photoclick chemistry is demonstrated. Additionally, facile techniques to quantify and observe patterns and determine cell viability within these hydrogels are presented.
07:23
Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
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2025
This protocol presents a light-induced method for fabricating slippery three-dimensional structures via sequential digital patterning and grafting on silane-coated nanoporous surfaces. This approach enables the spatially controlled formation of slippery regions, enabling patterned liquid repellency and the quantitative analysis of interfacial slipperiness, with applications in fluid manipulation and surface engineering.
07:10
Dynamic Light-Induced Protein Patterns at Model Membranes
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Cited by 2 •
2024
Here, a protocol is described for generating light-regulated and reversible protein patterns with high spatiotemporal precision at artificial lipid membranes. The method consists of the localized photoactivation of the protein iLID (improved light-inducible dimer) immobilized on model membranes that, under blue light, binds to its partner protein Nano (wild-type SspB).
02:58
Regulated Protein Degradation
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2020
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells. Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
FAQs
The illuminated pattern selects the regions in which the degradation signal becomes active or exposed. Only target proteins in those defined areas are directed toward cellular degradation machinery, while proteins elsewhere are not intentionally marked through the same light-triggered event. Changing the illuminated region therefore changes the spatial distribution of protein loss.
The signal provides the molecular connection between light exposure and protein removal. When illumination activates or exposes it, the attached target can be directed to machinery such as the ubiquitin-proteasome system. Without this regulated signal, light would not provide the specific molecular instruction needed to alter the target protein’s abundance.
Uniform manipulation changes protein abundance throughout the treated cell or tissue, making localized effects harder to distinguish. Light-patterned Degradation instead restricts the perturbation to chosen regions and times. This contrast allows researchers to relate protein loss in a particular location or at a particular moment to changes in cellular organization, signaling, or development.
A typical workflow attaches a light-responsive degradation signal to the protein of interest, selects the cellular or tissue region to perturb, and applies illumination in the desired pattern and time window. The resulting protein loss is then related to the biological response. This sequence connects optical control with a defined molecular and cellular outcome.
The method supports experiments on signaling, cell organization, development, and disease mechanisms. Researchers can remove a selected protein from a defined region and examine how that localized change affects the surrounding biological system. Because timing can also be controlled, the same strategy can connect protein function with events occurring at specific stages or moments.
Localized depletion can reveal whether a protein’s function depends on its position, its abundance at a particular time, or both. Observing the consequences of removing it from selected regions helps link molecular activity to larger biological outcomes. This is especially informative when protein function contributes to spatial organization, signaling patterns, developmental events, or disease-related mechanisms.