Related Experiment Video
Updated: Mar 11, 2026

07:30
Measuring Synaptic Vesicle Endocytosis in Cultured Hippocampal Neurons
Published on: September 4, 2017
10.5K
Autophagosome Formation by Endophilin Keeps Synapses in Shape
Marijn Kuijpers1, Volker Haucke1
1Leibniz-Institut für Molekulare Pharmakologie, 13125 Berlin, Germany.
Neuron
|November 25, 2016
Summary
Endophilin, an endocytic protein, unexpectedly aids autophagosome formation at synapses. This discovery reveals its role in preventing neurodegeneration and ataxia.
Area of Science:
- Cell Biology
- Neuroscience
- Molecular Biology
Background:
- Autophagosome formation is crucial for cellular health.
- Synaptic function relies on efficient protein turnover.
- The role of endocytic proteins in autophagy is not fully understood.
Purpose of the Study:
- To investigate the role of endophilin in autophagosome formation.
- To determine the impact of endophilin on synaptic health.
- To explore the link between endophilin, autophagy, and neurodegenerative diseases.
Main Methods:
- Utilized genetic and biochemical approaches.
- Investigated protein interactions at synapses.
- Assessed autophagosome formation and neuronal integrity.
Main Results:
- Endophilin plays a critical role in autophagosome formation at synapses.
- Dysfunction of endophilin leads to impaired autophagy and synaptic defects.
- Endophilin's function is essential for preventing neurodegeneration and ataxia.
Conclusions:
- Endophilin has a novel function in regulating autophagy at neuronal synapses.
- Targeting endophilin may offer therapeutic strategies for neurodegenerative disorders.
- This finding highlights the interplay between endocytosis and autophagy in maintaining neuronal homeostasis.
Related Concept Videos
Maturation of Endosomes
6.1K
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
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
6.1K
Autophagy
6.0K
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
6.0K
Fusion of Secretory Vesicles with the Plasma Membrane
19.2K
Proteins and neurotransmitters in secretory vesicles can be released from a cell upon vesicle docking, priming, and fusion with the plasma membrane. Vesicles are docked and primed in preparation for the quick exocytosis of their contents in response to a stimulus. The fusion process is mainly carried out by a SNAP Receptor or SNARE complex, consisting of synaptobrevin, syntaxin-1, and SNAP-25.
In 1993, Jim Rothman proposed that the antiparallel pairing of vesicular and transmembrane SNAREs, or...
In 1993, Jim Rothman proposed that the antiparallel pairing of vesicular and transmembrane SNAREs, or...
19.2K
Delivery Pathways to the Lysosome
10.4K
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
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
10.4K
The Early Endosome: Endocytosis of Transferrin
5.0K
Essential proteins such as insulin or low-density lipoprotein (LDL) and micronutrients such as iron enter a eukaryotic cell through receptor-mediated endocytosis. Subsequently, the early endosomes fuse with the vesicles containing such receptor-ligand complexes and play a vital role in sorting the incoming ligands and receptors. While the ligands are either degraded inside the vesicle or released into the cytosol, their receptors are returned to the plasma membrane for further rounds of...
5.0K
Assembly of Complex Microtubule Structures
2.8K
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
2.8K

