Intracellular Lipid Transport
Intracellular Lipid Transport - Related Videos
07:00
Using Caco-2 Cells to Study Lipid Transport by the Intestine
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Cited by 11 •
2015
Caco-2 cells can serve as an in vitro model to study the enterocyte transport of lipids, and lipid-soluble drugs/vitamins. The permeable membrane system separates the apical from the basolateral compartment, while the lentivirus expression system offers an effective gene overexpression method. The isolation of lipoproteins is confirmed by TEM.
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.
08:19
Solid Lipid Nanoparticles (SLNs) for Intracellular Targeting Applications
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Cited by 12 •
2015
In this study, a method for synthesizing ultra-small populations of biocompatible nanoparticles was described, as well as several in vitro methods by which to assess their cellular interactions.
12:25
A Step-by-step Method for the Reconstitution of an ABC Transporter into Nanodisc Lipid Particles
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Cited by 23 •
2012
Nanodiscs are small discoid particles that incorporate membrane proteins into a small patch of phospholipid bilayer. We provide a visual protocol that shows the step-by-step incorporation of the MalFGK2 transporter into a disc.
03:32
Nile Red Staining: A Technique to Detect and Quantify Intracellular Neutral Lipids in Algae
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2025
This video demonstrates a protocol for detecting and quantifying neutral lipids in algal cells by staining them with Nile red dye.
FAQs
The two routes provide complementary transport strategies. Vesicular trafficking uses membrane-bound carriers to move lipids between organelles, whereas lipid-transfer proteins support direct non-vesicular exchange at membrane contact sites. Together, these mechanisms connect separated cellular compartments with closely apposed membranes, allowing lipid distribution to remain coordinated rather than dependent on a single transport pathway.
Lipid-transfer proteins enable lipid exchange where organelle membranes come into close proximity. This non-vesicular route provides a distinct means of moving lipids without relying on membrane-bound carriers. Its importance is especially clear when coordinated communication between compartments is required, linking membrane contact sites to organelle lipid distribution and broader cellular membrane homeostasis.
Synthesis produces lipids, while remodeling adjusts their composition or state before they are distributed through the cell. Coordinating these processes with transport helps direct lipids toward membranes, storage, or signaling roles at the appropriate cellular locations. Disrupted coordination can therefore affect membrane organization, energy storage, and signaling control.
A complete analysis should consider the endoplasmic reticulum, Golgi apparatus, mitochondria, lysosomes, and plasma membrane. These compartments participate in a connected distribution network rather than functioning as isolated lipid pools. Comparing lipid movement and communication among them can clarify how cells maintain membranes, organize metabolism, and regulate lipid-dependent signaling.
Research on this process can connect lipid movement with membrane homeostasis, cell signaling, and metabolism. It can also show how organelles coordinate their functions through lipid exchange and distribution. These insights help investigators interpret cellular behavior as an integrated system in which changes in one compartment may influence several other compartments.
Defective transport can disturb the normal distribution of lipids among organelles and may interfere with communication between those compartments. Studying these failures helps explain how abnormal lipid accumulation develops and how it relates to altered membrane organization, signaling, or metabolism. The topic therefore provides a framework for investigating the molecular basis of lipid-associated disorders.