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Related Concept Videos

Membrane Lipids01:32

Membrane Lipids

Lipids are an essential component of all biological membranes. The average lipid content in mammalian membranes is 50%, though it can be as low as 20% in the inner mitochondrial membrane or as high as 80% in the myelin sheath present around the nerve cells.
Phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin are the most common phospholipids present in mammalian membranes. At physiological pH, phosphatidylserine is negatively charged, while the other three...
Membrane Carbohydrates01:30

Membrane Carbohydrates

The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
Membrane carbohydrates do not have any hydrophobic region and are exclusively located on the cell's outer surface. The addition of sugar molecules or glycosylation of proteins happens in...
Glycocalyx and its Functions01:14

Glycocalyx and its Functions

The glycocalyx is a carbohydrate-rich, fuzzy-appearing layer on the outer surface of the cell membrane. It is highly hydrophilic, because of this it attracts large amounts of water to the cell's surface. This aids the cell's interaction with the watery environment and also helps it to obtain substances dissolved in the water. It is also important for cell identification, self/non-self determination, and embryonic development and is used in cell-to-cell attachments to form tissues.
Components of...
Proteoglycans01:05

Proteoglycans

Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
Protein Glycosylation01:25

Protein Glycosylation

Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

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%...

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Mass Spectrometric Analysis of Glycosphingolipid Antigens
13:09

Mass Spectrometric Analysis of Glycosphingolipid Antigens

Published on: April 16, 2013

Stem cell glycolipids.

Makoto Yanagisawa1

  • 1Institute of Molecular Medicine and Genetics, Medical College of Georgia, 1120 15th Street-CA4040, Augusta, GA 30912, USA. myanagisawa@mcg.edu

Neurochemical Research
|December 17, 2010
PubMed
Summary
This summary is machine-generated.

Glycolipids serve as crucial biomarkers for identifying various stem cell types, including pluripotent, multipotent, and cancer stem cells. Their unique expression patterns aid in the isolation and characterization of these important cell populations.

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Identifying Cell Surface Markers of Primary Neural Stem and Progenitor Cells by Metabolic Labeling of Sialoglycan
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Ganglioside Extraction, Purification and Profiling
10:05

Ganglioside Extraction, Purification and Profiling

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Immunology

Background:

  • Glycolipids are essential cell surface molecules involved in cellular recognition and signaling.
  • Specific glycolipids, such as stage-specific embryonic antigens (SSEA) and gangliosides, are differentially expressed across various cell types.
  • These expression patterns make them promising candidates for stem cell identification.

Purpose of the Study:

  • To review glycolipids expressed in different stem cell populations.
  • To discuss the utility of these glycolipids as biomarkers for stem cell identification and isolation.
  • To highlight the role of glycolipids in pluripotent, multipotent, and cancer stem cells.

Main Methods:

  • Literature review of studies on glycolipid expression in stem cells.
  • Analysis of glycolipid expression patterns in pluripotent stem cells (ESCs, iPSCs, VSELs, ASCs, MDSCs).
  • Examination of glycolipid expression in multipotent stem cells (NSCs, MSCs, FLMPCs, HSCs) and cancer stem cells (CSCs).

Main Results:

  • Glycolipids like SSEA-3, SSEA-4, SSEA-1, GD3, GD2, and A2B5 antigens are key markers in various stem cells.
  • Distinct glycolipid profiles are observed in pluripotent, multipotent, and cancer stem cells.
  • Glycolipid expression varies with cell type and differentiation state.

Conclusions:

  • Glycolipids are valuable biomarkers for distinguishing and isolating diverse stem cell populations.
  • Understanding glycolipid expression is crucial for stem cell research and therapeutic applications.
  • Further research into glycolipid functions may reveal new therapeutic targets.