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Related Concept Videos

Glycocalyx and its Functions01:14

Glycocalyx and its Functions

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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.
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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.
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Glycopeptide Capture for Cell Surface Proteomics
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A physiologic roll for cell surface GlycoRNAs.

William A Muller1

  • 1Department of Pathology, Northwestern University Feinberg School of Medicine, Ward Building, Room 3-126, 303 East Chicago Avenue, Chicago, IL 60611, United States.

Journal of Leukocyte Biology
|March 25, 2024
PubMed
Summary
This summary is machine-generated.

Glycosylated RNA on leukocyte surfaces capture neutrophils in blood vessels. These neutrophil glycosylated RNA molecules bind to P-selectin, aiding in vascular interactions.

Keywords:
GlycoRNAP-selectininflammationleukocyte rollingneutrophil

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Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • Glycosylated RNA molecules are present on leukocyte surfaces and can bind to lectins.
  • The physiological roles of these glycosylated RNA molecules were previously unknown.

Purpose of the Study:

  • To investigate the function of glycosylated RNA molecules on leukocyte surfaces.
  • To determine the specific interactions of neutrophil glycosylated RNA with adhesion molecules.

Main Methods:

  • Utilized a recent study (PMID 38262409) to analyze the function of glycosylated RNA.
  • Investigated the binding properties of neutrophil glycosylated RNA to selectins.

Main Results:

  • Demonstrated that glycosylated RNA on leukocytes promotes neutrophil capture and rolling in the vasculature.
  • Showed that neutrophil glycosylated RNA binds specifically to P-selectin, but not E-selectin.

Conclusions:

  • Glycosylated RNA on leukocytes plays a crucial role in neutrophil recruitment during inflammation.
  • The interaction of neutrophil glycosylated RNA with P-selectin is a key mechanism for vascular adhesion.