Page 85 - 74_04
P. 85
VOL. 74 (4) SIGNALS EMANATING FROM LEUKOCYTE...
PECAM-1 can trigger “outside-in” signals via PKC and PI-3K leading to
activation of alphav-beta3 (85).
CONCLUDING REMARKS
Understanding the complex signaling networks that govern the
extravasation process is of critical importance for the identification of
novel therapeutical targets in the treatment of chronic inflammatory and
autoimmune diseases. Moreover, the development of new non-invasive
and localized drug release strategies instead of systemic pharmacological
administration will contribute to this aim.
REFERENCES
(1) VON ANDRIAN, U. H. AND MACKAY, C. R. (2000) T-cell function and migration.
Two sides of the same coin. N. Engl. J. Med. 343: 1020.
(2) BUTCHER, E. C. (1991) Leukocyte-endothelial cell recognition: three (or more)
steps to specificity and diversity. Cell. 67: 1033.
(3) SPRINGER, T. A. (1994) Traffic signals for lymphocyte recirculation and
leukocyte emigration: the multistep paradigm. Cell. 76: 301.
(4) SPRINGER, T. A. (1995) Traffic signals on endothelium for lymphocyte
recirculation and leukocyte emigration. Annu. Rev. Physiol. 57: 827.
(5) MEHTA, P.; CUMMINGS, R. D. AND MCEVER, R. P. (1998) Affinity and kinetic
analysis of P-selectin binding to P-selectin glycoprotein ligand-1. J. Biol.
Chem. 273: 32506.
(6) NICHOLSON, M. W.; BARCLAY, A. N.; SINGER, M. S.; ROSEN, S. D. AND VAN
DER MERWE, P. A. (1998) Affinity and kinetic analysis of L-selectin (CD62L)
binding to glycosylation-dependent cell-adhesion molecule-1. J. Biol. Chem.
273: 763.
(7) VESTWEBER, D. AND BLANKS, J. E. (1999) Mechanisms that regulate the
function of the selectins and their ligands. Physiol. Rev. 79: 181.
(8) WADDELL, T. K.; FIALKOW, L.; CHAN, C. K.; KISHIMOTO, T. K. AND DOWNEY,
G. P. (1995) Signaling functions of L-selectin: enhancement of tyrosine
phosphorylation and activation of MAP kinase. J. Biol. Chem. 270: 15403.
(9) BRENNER, B.; GULBINS, E.; SCHLOTTMANN, K.; KOPPENHOEFER, U.; BUSCH, G.
L.; WALZOG, B.; STEINHAUSEN, M.; COGGESHALL, K. M.; LINDERKAMP, O.
AND LANG, F. (1996) L-selectin activates the Ras pathway via the tyrosine
kinase p56lck. Proc. Natl. Acad. Sci. USA. 93: 15376.
9