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Updated: Jun 20, 2026
08:51
The Microscopy-Based Assay to Study and Analyze the Recycling Endosomes using SNARE Trafficking
Published on: February 12, 2022
Chemical dissection of endosomal pathways
Georgia Drakakaki1, Stéphanie Robert, Natasha V Raikhel
1Center for Plant Cell Biology, Institute for Integrative Genome Biology & Department of Botany and Plant Sciences, University of California, Riverside, California 92521, USA.
Plant Signaling & Behavior
|August 26, 2009
Summary
Bioactive chemicals like Endosidin 1 (ES1) are essential tools for studying plant endomembrane trafficking and signal transduction. These rapid, reversible inhibitors help dissect complex pathways critical for plant development and environmental responses.
Area of Science:
- Plant cell biology
- Molecular plant science
- Biochemistry
Background:
- Membrane trafficking and signal transduction are vital for plant development and environmental responses.
- Pathways involving brassinosteroids and auxins rely on endocytosis and recycling.
- The dynamic nature of endomembrane trafficking presents challenges in studying these processes.
Discussion:
- Bioactive chemicals, such as Brefeldin A (BFA) and Endosidin 1 (ES1), are powerful tools for investigating endocytosis and recycling.
- Pharmacological inhibitors enable the dissection of distinct endosome subpopulations involved in trafficking and signal transduction.
- ES1 exemplifies the utility of chemical tools in understanding complex cellular mechanisms.
Key Insights:
- Pharmacological inhibitors provide a means to study rapid, minute-timescale endomembrane events.
- Chemical dissection allows for the characterization of specific endosome compartments and their roles.
- Understanding these pathways is crucial for plant growth and adaptation.
Outlook:
- Further application of chemical biology approaches will enhance our understanding of plant endomembrane systems.
- Developing novel chemical probes can reveal new insights into signal transduction pathways.
- This research paves the way for manipulating plant development and stress responses.
Related Concept Videos
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The recycling endosome, also known as the endosomal recycling compartment (ERC), is a part of the slow-recycling process of the endocytic pathway. Molecules internalized through receptor-mediated endocytosis are either degraded in the lysosomes or are recycled to the plasma membrane through the fast- or slow-recycling route.
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
01:28Maturation of Endosomes
The early endosome containing internalized molecules matures through transformations in its location, morphology, intraluminal pH, and membrane protein composition. Together, these changes result in a more acidic late endosome that contains multiple intraluminal vesicles; therefore, the late endosome is also called a multivesicular body (MVB).
Changes in location
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
Changes in location
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01:36Delivery Pathways to the Lysosome
Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
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Endocytosis
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Clathrin-coated vesicles use endocytosis to transport receptors and lysosomal hydrolases from the Golgi to the lysosome in the late secretory pathway. Clathrin-mediated endocytosis was the first described endocytic process, and Clathrin-coated vesicles remain one of the most well-studied transport vesicles. The molecular machinery that generates clathrin-coated vesicles comprises over 50 proteins that precisely coordinate vesicle formation. Cell surface receptors concentrated in indented sites...
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