Egf Receptor Clustering
Egf Receptor Clustering - Related Videos
09:16
Studying the Stoichiometry of Epidermal Growth Factor Receptor in Intact Cells using Correlative Microscopy
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Cited by 23 •
2015
This protocol describes the labeling of epidermal growth factor receptor (EGFR) on COS7 fibroblast cells, and subsequent correlative light- and electron microscopy of whole cells in hydrated state. The label contained fluorescent quantum dots. The protocol can be used to study the stoichiometry of EGFR at the single molecule level.
12:15
Image Processing Protocol for the Analysis of the Diffusion and Cluster Size of Membrane Receptors by Fluorescence Microscopy
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Cited by 8 •
2019
Here, we present a protocol for single particle tracking image analysis that allows quantitative evaluation of diffusion coefficients, types of motion and cluster sizes of single particles detected by fluorescence microscopy.
10:37
Spatial Separation of Molecular Conformers and Clusters
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Cited by 3 •
2014
We present a technique that allows the spatial separation of different conformers or clusters present in a molecular beam. An electrostatic deflector is used to separate species by their mass-to-dipole moment ratio, leading to the production of gas-phase ensembles of a single conformer or cluster stoichiometry.
01:20
Cluster Sampling Method
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2023
Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest. To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
01:45
Vesicular Tubular Clusters
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2023
After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi. With the help of motor proteins such...
FAQs
EGF binding first promotes a conformational change in the receptor. This change supports receptor dimerization, followed by assembly into higher-order groups within the plasma membrane. The resulting organization facilitates tyrosine phosphorylation, a molecular modification that helps initiate downstream signaling. This sequence connects extracellular ligand recognition with intracellular responses such as proliferation, survival, migration, and receptor internalization.
Clusters provide organized signaling platforms rather than leaving receptor interactions spatially dispersed across the membrane. By bringing activated receptors into higher-order assemblies, they facilitate tyrosine phosphorylation and support downstream signal transmission. Their organization therefore affects how cells interpret EGF and may influence several outcomes, including growth, survival, movement, and removal of receptors through internalization.
Dimerization describes the association of two receptor molecules after ligand-driven conformational changes, whereas clustering refers to a larger spatial assembly that can form after or alongside dimerization. These are related but distinct organizational levels. Dimerization contributes to receptor activation, while higher-order clustering creates broader signaling platforms that can facilitate phosphorylation and shape subsequent cellular responses.
Fluorescence imaging can examine where receptors are organized within the plasma membrane. Biochemical assays can assess associated molecular events, including tyrosine phosphorylation. Quantitative modeling adds a framework for analyzing relationships between receptor organization and signaling behavior. Using these approaches together provides complementary evidence about EGFR clustering, rather than relying on a single measurement of receptor activity.
A study can combine fluorescence imaging, biochemical assays, and quantitative modeling to connect spatial organization with signaling activity. Imaging examines receptor distribution, biochemical measurements address phosphorylation, and modeling helps interpret how these observations relate to downstream responses. This combined workflow is useful because it links membrane-level organization with functional outcomes instead of treating location and signaling as separate phenomena.
Analysis of receptor organization can clarify how cells convert extracellular EGF detection into changes in proliferation, survival, and migration. It can also help examine receptor internalization, which represents another response associated with clustered signaling platforms. These outcomes make EGFR clustering relevant to broader questions about cell communication and how membrane organization shapes cellular behavior.
Abnormal signaling associated with cancer is one reason researchers examine EGFR clustering. Studying the arrangement of receptors alongside tyrosine phosphorylation and downstream responses can help clarify how altered cell communication relates to disease-associated behavior. The topic therefore connects membrane organization with biological processes that influence proliferation, survival, migration, and receptor internalization in disease contexts.