FK506 (tacrolimus) inhibits extravasation of lymphoid cells by abrogating VLA-4/VCAM-1 mediated transendothelial migration |
| |
Authors: | Shinobu Tsuzuki Noriko Toyama-Sorimachi Fujiko Kitamura Yoshimi Tobita Masayuki Miyasaka |
| |
Abstract: | Extravasation is a critical process for the physiological lymphocyte traffic as well as the hematogenous spread of malignant hemopoietic cells. Here we report that abrogation of calcineurin activity leads to in vitro transendothelial migration and in vivo infiltration of human lymphoma Nalm-6 cells, which are associated with the abrogation of the VLA-4/VCAM-1 mediated pathway. Rapamycin, which can antagonize FK506 but not CsA to inhibit calcineurin, abrogates FK-506 mediated but not CsA mediated inhibition of in vitro transendothelial migration. FK506 may exert its potent immunosuppressive action partly by inhibiting VLA-4/VCAM-1 mediated transendothelial migration or insinuation of lymphoid cells to tissues. |
| |
Keywords: | Transendothelial migration Lymphocyte FK506 Calcineurin VLA-4 VCAM-1 |
本文献已被 ScienceDirect 等数据库收录! |