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Presentation of chemokine SDF-1α by fibronectin mediates directed migration of T cells

  • A. J. Pelletier
  • , L. J.W. Van der Laan
  • , P. Hildbrand
  • , M. A. Siani
  • , D. A. Thompson
  • , P. E. Dawson
  • , B. E. Torbett
  • , D. R. Salomon*
  • *Corresponding author for this work
  • Scripps Research Institute

Research output: Contribution to journalArticleAcademicpeer-review

120 Citations (Scopus)

Abstract

The role of chemokine - matrix interactions in integrin-dependent T-cell migration was examined to address the critical question of how chemokines provide directional information. The chemokine SDF-1α binds fibronectin (Fn) with a low nanomolar Kd (equilibrium dissociation constant). SDF-1α presented by Fn induced directed migration. Spatial concentration gradients of chemokine were not required to maintain directed migration. Fn-presented chemokine induced the polarization of cells, including the redistribution of the SDF-1α receptor, to the basal surface and leading edge of the cell. A new model for directed migration is proposed in which the co-presentation of an adhesive matrix and chemokine provides the necessary positional information independent of a soluble spatial gradient.

Original languageEnglish
Pages (from-to)2682-2690
Number of pages9
JournalBlood
Volume96
Issue number8
DOIs
Publication statusPublished - 15 Oct 2000
Externally publishedYes

Bibliographical note

© 2000 by The American Society of Hematology

Supported by National Institutes of Health (NIH) grants AI42384 and GM53489, Bethesda, MD, and a grant from the Katherine Huber-Steiner Foundation, Bern, Switzerland

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