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Related Concept Videos

Proteoglycans01:05

Proteoglycans

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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,...
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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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Glycodendrimers: tools to explore multivalent galectin-1 interactions.

Jonathan M Cousin1, Mary J Cloninger1

  • 1Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, USA.

Beilstein Journal of Organic Chemistry
|July 1, 2015
PubMed
Summary
This summary is machine-generated.

Lactose-functionalized glycodendrimers organize galectin-1 into nanoparticles and inhibit cancer cell aggregation. This research explores galectin-1 interactions and potential therapeutic applications in oncology.

Keywords:
dendrimergalectin-1glycodendrimermultivalentnanoparticle

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Area of Science:

  • Biochemistry
  • Materials Science
  • Nanotechnology

Background:

  • Galectin-1 is implicated in cancer progression, including cell aggregation.
  • Understanding galectin-1's multivalent interactions is crucial for therapeutic development.

Purpose of the Study:

  • To investigate the multivalent interactions between galectin-1 and lactose-functionalized polyamidoamine (PAMAM) glycodendrimers.
  • To explore the potential of these glycodendrimers in modulating galectin-1's function in cancer cell aggregation.

Main Methods:

  • Dynamic light scattering and fluorescence microscopy were used to analyze galectin-1-glycodendrimer interactions in solution.
  • Cell-based assays using DU145 human prostate carcinoma cells were performed.

Main Results:

  • Glycodendrimers nucleated galectin-1 into uniform nanoparticles (400-500 nm).
  • Glycodendrimers acted as competitive binding sites, preventing galectin-1-mediated aggregation of DU145 cells.

Conclusions:

  • Lactose-functionalized glycodendrimers effectively organize galectin-1 into nanoparticles.
  • These glycodendrimers can inhibit galectin-1's role in cancer cell aggregation, suggesting therapeutic potential.