Peg Coating
Peg Coating - Related Videos
07:50
Electrophysiology of Scorpion Peg Sensilla
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Cited by 4 •
2011
This article describes an electrophysiological method for isolating chemical stimulation to individual sensilla via extracellular, tip-recordings under mineral oil.
06:41
A Peg Plate Biofilm Assay for Screening Antibacterial Agents
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2025
This video demonstrates an assay for screening antimicrobial compounds that efficiently eliminate biofilms using a peg-plate. The methodology monitors the biofilm's metabolic state after treatment with antimicrobial compounds, facilitating the determination of the minimum biofilm eradication concentration.
04:54
Efficient Polyethylene Glycol (PEG) Mediated Transformation of the Moss Physcomitrella patens
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Cited by 60 •
2011
A simple and efficient method to transform Physcomitrella pantens protoplasts is described. This method is adapted from protocols for Physocmitrella protonemal protoplast and Arabidopsis mesophyll protoplast transformation1.
06:56
Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions
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Cited by 17 •
2013
Poly(ethylene glycol) (PEG) brush-arm star polymers (BASPs) with narrow mass distributions and tunable nanoscopic sizes are synthesized in via ring opening metathesis polymerization (ROMP) of a PEG-norbornene macromonomer followed by transfer of portions of the resulting living brush initiator to vials containing varied amounts of a rigid, photo-cleavable bis-norbornene crosslinker.
09:21
Generation and Recovery of β-cell Spheroids From Step-growth PEG-peptide Hydrogels
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Cited by 5 •
2012
The following protocol provides techniques for encapsulating pancreatic β-cells in step-growth PEG-peptide hydrogels formed by thiol-ene photo-click reactions. This material platform not only offers a cytocompatible microenvironment for cell encapsulation, but also permits user-controlled rapid recovery of cell structures formed within the hydrogels.
FAQs
The key mechanism is steric repulsion from a strongly hydrated PEG layer. Water associated with the flexible coating creates a physical barrier that makes it difficult for proteins to approach and remain on the underlying surface. This reduces nonspecific adsorption, helping preserve surface behavior and improve the reliability of measurements involving biological fluids.
Hydration supplies the water-rich environment responsible for repulsive behavior, while polymer flexibility allows the PEG layer to form a dynamic surface barrier. Together, these properties limit close contact between the modified material and surrounding proteins or cells. Their combined effect helps reduce unwanted biological interactions without relying solely on a rigid physical covering.
An unmodified surface may allow greater nonspecific attachment of proteins or cells, which can alter its interaction with surrounding fluids and biological components. PEG coating changes that interface by introducing a hydrated, flexible layer that suppresses unwanted attachment. The resulting reduction in fouling can support more stable device performance and more controlled biological studies.
PEG coating can be applied to a range of biological materials, devices, and laboratory surfaces. The overview specifically identifies nanoparticles, biosensors, microfluidic devices, and implanted materials as relevant examples. Across these platforms, the coating is useful when researchers need to limit fouling, improve biocompatibility, or control how the surface interacts with proteins and cells.
Researchers may choose PEG coating when unwanted protein adsorption or cell attachment could interfere with the intended function of a material or measurement. It is particularly relevant for systems exposed to biological fluids, where nonspecific interactions can reduce stability or obscure controlled interactions. The approach therefore supports more reliable measurements and studies of biological behavior.
By reducing fouling and unwanted attachment, PEG coating can help prolong functional performance and improve the consistency of biological systems. These effects are relevant to targeted delivery systems, biosensors, microfluidic platforms, nanoparticles, and implanted materials. The coating also supports controlled studies by reducing background interactions that might otherwise complicate interpretation of biological responses.