Related Experiment Video
Updated: Mar 30, 2026
08:59
Lipid Exchange Assay in Living Cells
Published on: March 21, 2025
1.3K
Sphingolipids, Lipid Rafts, and Giardial Encystation: The Show Must Go On
Tavis L Mendez1, Atasi De Chatterjee1, Trevor Duarte1
1Infectious Disease and Immunology Cluster, The Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX 79968, USA ; Department of Biological Sciences, University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968-0519, USA.
Current Tropical Medicine Reports
|November 21, 2015
Summary
Sphingolipids and lipid rafts are crucial for Giardia parasite encystation and survival. Targeting these components may offer new therapies against Giardia infections, particularly in vulnerable children.
Area of Science:
- Cell Biology
- Parasitology
- Biochemistry
Background:
- Sphingolipids are essential phospholipids in eukaryotic cell membranes.
- Lipid rafts, enriched in sphingolipids and cholesterol, regulate cellular signaling.
- Giardia is a significant enteric parasite affecting vulnerable populations.
Purpose of the Study:
- To review the role of sphingolipids and lipid rafts in Giardia.
- To explore their potential as therapeutic targets for Giardia infections.
Main Methods:
- Literature review of current research on sphingolipids, lipid rafts, and Giardia.
- Analysis of findings related to encystation and cyst viability.
Main Results:
- Sphingolipids, particularly glucosylceramide, are vital for Giardia encystation and cyst viability.
- Lipid raft dynamics influence Giardia encystation and cyst production.
Conclusions:
- Sphingolipids and lipid rafts are critical for Giardia parasite development.
- These molecules represent promising targets for novel anti-Giardia therapies.
Related Concept Videos
01:26Membrane Fluidity
17.9K
Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is...
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is...
17.9K
01:23Membrane Fluidity
179.3K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
179.3K
01:18Membrane Domains
8.2K
The membrane domains concentrate specific lipids and proteins at one place within the membrane, which helps in cell signaling, adhesion, and other critical cellular processes. These domains can differ in size, composition, function, and lifespan.
Protein Domains
The membrane comprises a group of distinct proteins responsible for carrying out a cell's specific function. For example, the plasma membrane of the human sperm, or a single germ cell, contains a unique set of proteins in the...
Protein Domains
The membrane comprises a group of distinct proteins responsible for carrying out a cell's specific function. For example, the plasma membrane of the human sperm, or a single germ cell, contains a unique set of proteins in the...
8.2K
01:29GPI Anchoring of Proteins in the ER Membrane
5.9K
GPI-anchoring is a post-translational, reversible protein modification that is ubiquitous in eukaryotes. Such proteins are primarily present on the exoplasmic leaflet of the plasma membrane.
GPI-anchor structure
A sequence of 11 enzymatic reactions results in the synthesis of the complete GPI anchor consisting of a hydrophobic and a hydrophilic portion. The hydrophobic portion comprises phosphatidylinositol, while the hydrophilic part comprises polar groups like phosphoethanolamine,...
GPI-anchor structure
A sequence of 11 enzymatic reactions results in the synthesis of the complete GPI anchor consisting of a hydrophobic and a hydrophilic portion. The hydrophobic portion comprises phosphatidylinositol, while the hydrophilic part comprises polar groups like phosphoethanolamine,...
5.9K
01:35Asymmetric Lipid Bilayer
11.0K
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
11.0K
01:28Assembly of the Lipid Bilayer in the ER
4.4K
Biological membranes are more than just a barrier separating cell cytoplasm from the outside environment. They are highly dynamic and help maintain the integrity and physiological stability of the cells as well as membrane-bound organelles. Membranes also play vital roles in cell-to-cell and intracellular communication.
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
A large chunk of any biological membrane is composed of phospholipids. These lipids have a heterogeneous distribution across different subcellular organelles and even between...
4.4K