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Dendritic cells: a spot on sialic Acid.

Hélio J Crespo1, Joseph T Y Lau2, Paula A Videira3

  • 1CEDOC - UC Imunologia, Faculdade de Ciências Médicas, Universidade Nova de Lisboa , Lisbon , Portugal ; Department of Molecular and Cellular Biology, Roswell Park Cancer Institute , Buffalo, NY , USA.

Frontiers in Immunology
|January 11, 2014
PubMed
Summary

Cell surface sialic acids on dendritic cells (DCs) are crucial for immune responses. Understanding and manipulating DC sialylation can enhance DC-based therapies for various diseases.

Keywords:
dendritic cellhost-pathogen interactionlectinssialic acidsialylation

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Area of Science:

  • Immunology
  • Glycobiology
  • Cell Biology

Background:

  • Cell surface glycans mediate critical host-host and host-pathogen interactions.
  • Sialic acids, terminal sugars on glycans, influence cell adhesion, trafficking, and immune recognition.
  • Dendritic cells (DCs) are key regulators bridging innate and adaptive immunity, with their functions influenced by surface glycans.

Purpose of the Study:

  • To review the developmental regulation of DC surface sialic acids.
  • To explore how DC sialylation impacts immune functions like antigen uptake, migration, and T cell priming.
  • To highlight the therapeutic potential of targeting DC sialylation for improved DC-based therapies.

Main Methods:

  • Literature review focusing on sialic acids and dendritic cell functions.
  • Analysis of existing evidence on the role of sialylation in DC development and activation.
  • Exploration of potential therapeutic strategies involving DC surface sialylation.

Main Results:

  • Sialic acid-modified structures are integral to DC functions including antigen uptake, migration, and T cell priming.
  • DC surface sialic acid content dynamically changes during differentiation and activation.
  • Evidence suggests DC surface sialylation is a modifiable target influencing immune cell interactions.

Conclusions:

  • DC surface sialylation plays a significant role in immune regulation and DC function.
  • Targeting DC sialic acids offers a promising strategy for enhancing DC-based immunotherapies.
  • Further research into DC sialylation can lead to novel therapeutic approaches for immune modulation.