Lysosomal Cargo Delivery
Lysosomal Cargo Delivery - Related Videos
01:36
Delivery Pathways to the Lysosome
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2023
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...
10:16
Targeted Plasma Membrane Delivery of a Hydrophobic Cargo Encapsulated in a Liquid Crystal Nanoparticle Carrier
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Cited by 3 •
2017
A liquid crystal nanoparticle (LCNP) nanocarrier is exploited as a vehicle for the controlled delivery of a hydrophobic cargo to the plasma membrane of living cells.
02:35
Visualizing Intracellular Transport of Cargo in Cultured Astrocytes
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2025
Source: Creighton, B. A., et al. Visualizing and Analyzing Intracellular Transport of Organelles and Other Cargos in Astrocytes. J. Vis. Exp. (2019)This video demonstrates the visualization of intracellular cargo transport in cultured astrocytes using a fluorescent acidotropic probe that selectively labels acidic endolysosomal vesicles. Time-lapse imaging and Z-stack acquisition with a confocal microscope allow tracking of fluorescently labeled cargo throughout the three-dimensional cell volume.
05:30
Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis
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2025
This protocol describes a live-cell imaging method for monitoring lysosomal membrane permeabilization during necroptosis, utilizing fluorescent probes that detect changes in lysosomal membrane integrity and acidification.
08:06
Identification of Kinesin-1 Cargos Using Fluorescence Microscopy
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Cited by 1 •
2016
Here, a protocol is presented to identify Kinesin-1 cargos. A motorless mutant of the Kinesin-1 heavy chain (KIF5B) aggregates in the cytoplasm and induces aggregation of its cargos. Both aggregates are detected under fluorescence microscopy. A similar strategy can be employed to identify cargos of other motor proteins.
FAQs
Sorting signals help direct proteins, lipids, membrane components, and engulfed material toward the appropriate trafficking route. Subsequent vesicle fusion events transfer that cargo into compartments containing hydrolytic enzymes, where controlled degradation can occur. This coordination prevents indiscriminate breakdown and supports the recovery of usable cellular components through recycling.
These pathways provide distinct entry or transport routes for material destined for lysosomes. Endocytosis internalizes material from the cell surface, phagocytosis handles engulfed material, and vesicle trafficking moves cargo between membrane-bound compartments. Although their starting points differ, each route depends on sorting and fusion steps that ultimately connect cargo with lysosomal degradation.
Acidic lysosomal compartments provide the setting in which hydrolytic enzymes break down delivered material. This chemical environment enables controlled processing of proteins, lipids, membrane components, and internalized material rather than merely transporting them. The resulting degradation and recycling influence cellular maintenance and determine what processed material remains available for immune-related functions.
Pathogen survival can be affected by whether internalized microbes reach compartments capable of enzymatic degradation. Efficient delivery exposes them to the lysosomal processing environment, whereas interference with trafficking, sorting, or fusion may limit that exposure. Consequently, lysosomal cargo delivery forms an important point of interaction between host defense mechanisms and pathogen strategies that promote intracellular persistence.
A conceptual analysis follows cargo from its uptake or initial membrane compartment through sorting, vesicle movement, and fusion with lysosome-associated compartments. The final assessment considers whether the material undergoes enzymatic degradation and whether useful components are recycled. Organizing observations in this sequence helps distinguish defects in routing from defects in downstream processing.
Delivery to lysosomal compartments can influence how internalized material is degraded into forms relevant to antigen processing and presentation. The pathway therefore links intracellular trafficking with communication between immune cells. Studying where cargo travels and how it is processed helps clarify how immune cells handle internalized material and regulate subsequent recognition by other immune cells.
This topic provides a framework for examining host–pathogen interactions, including how immune cells process internalized microbes and how pathogens may evade intracellular degradation. It also supports investigation of therapeutic strategies that target intracellular trafficking. Such studies can connect altered cargo routing with changes in microbial survival, antigen processing, or immune-cell function.