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Related Experiment Video

Updated: Feb 27, 2026

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Chemokine isoforms and processing in inflammation and immunity.

Paul Proost1, Sofie Struyf1, Jo Van Damme1

  • 1Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, University of Leuven, Herestraat 49, B-3000, Leuven, Belgium.

Journal of Autoimmunity
|July 8, 2017
PubMed
Summary
This summary is machine-generated.

Chemokines exhibit functional heterogeneity through post-translational modifications like proteolysis, citrullination, and nitration. These modifications fine-tune leukocyte migration, impacting inflammation and autoimmune diseases.

Keywords:
CD26ChemokineCitrullineGlycosylationNitrationProtease

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Area of Science:

  • Immunology
  • Molecular Biology
  • Biochemistry

Background:

  • Chemokines are key regulators of leukocyte trafficking, historically classified by their protein nature and genomic sequences.
  • Post-translational modifications (PTMs) represent a third dimension of chemokine heterogeneity, significantly impacting their function.

Purpose of the Study:

  • To explore the functional implications of diverse chemokine post-translational modifications.
  • To compare PTMs in biological and pathological contexts, particularly in autoimmune diseases.

Main Methods:

  • Bioinformatic analysis to predict glycosylation sites.
  • Review of experimental studies on chemokine glycosylation, proteolysis, citrullination, and nitration.
  • Comparison of modified chemokine isoforms and their effects on G protein-coupled receptor (GPCR) and glycosaminoglycan (GAG) interactions.

Main Results:

  • Most chemokines lack glycosylation, potentially explaining their rapid turnover in inflammatory environments.
  • Proteolysis, citrullination, and nitration are significant PTMs that modulate chemokine activity and leukocyte migration.
  • Modified chemokines with reduced GPCR affinity can decrease leukocyte migration in inflammatory models.

Conclusions:

  • Post-translational modifications are critical for chemokine functional diversity and regulation of immune responses.
  • Understanding these modifications offers therapeutic potential for inflammatory and autoimmune diseases.