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 language | English |
|---|---|
| Pages (from-to) | 2682-2690 |
| Number of pages | 9 |
| Journal | Blood |
| Volume | 96 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 15 Oct 2000 |
| Externally published | Yes |
Bibliographical note
© 2000 by The American Society of HematologySupported 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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