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Animal lectins as cell adhesion molecules

H Kaltner1, B Stierstorfer

  • 1Institut für Physiologische Chemie, Tierärztliche Fakultät, Ludwig-Maximilians-Universität, München, Deutschland. kaltner@tiph.vetmed.uni-muenchen.de

Acta Anatomica
|October 22, 1998
PubMed
Summary
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Cell adhesion relies on protein-carbohydrate interactions, particularly selectins and galectins, which are crucial for specific cellular recognition and binding in processes like leukocyte trafficking.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Immunology

Background:

  • Protein-carbohydrate interactions are vital for cell adhesion, complementing peptide recognition.
  • The 'sugar code' dictates specificity in cellular binding partner selection.
  • Lectins, such as selectins and galectins, play a significant role in mediating cell adhesion.

Purpose of the Study:

  • To review the structural and functional aspects of selectins and galectins.
  • To highlight the importance of these lectins in cell adhesion mechanisms.
  • To discuss the integration of carbohydrate-based recognition with other modes for specificity.

Main Methods:

  • Literature review focusing on selectins and galectins.
  • Analysis of structural and functional data related to lectin-mediated cell adhesion.

Related Experiment Videos

  • Synthesis of information on lectin roles in leukocyte trafficking and cell-cell interactions.

    • Main Results:

    • Selectins mediate initial contact between leukocytes and endothelium, guiding lymphocyte trafficking.
    • Galectins (e.g., galectin-1, galectin-3) are involved in cell-cell and cell-matrix interactions.
    • The combined action of different lectins and recognition modes enhances specificity in cellular interactions.

    Conclusions:

    • Selectins and galectins are key endogenous lectins mediating crucial cell adhesion functions.
    • Understanding these lectins is essential for comprehending cellular selection and trafficking.
    • The integration of carbohydrate recognition with other signaling pathways underpins specific cell interactions.